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56000000 = 29567
BaseRepresentation
bin1101010110011…
…1111000000000
310220101002120002
43111213320000
5103314000000
65320135132
71246664210
oct325477000
9126332502
1056000000
11296796a1
12169074a8
13b7a93c4
14761a240
154db28d5
hex3567e00

56000000 has 140 divisors (see below), whose sum is σ = 159841704. Its totient is φ = 19200000.

The previous prime is 55999997. The next prime is 56000003. The reversal of 56000000 is 65.

Adding to 56000000 its reverse (65), we get a palindrome (56000065).

It is an interprime number because it is at equal distance from previous prime (55999997) and next prime (56000003).

It is a tau number, because it is divible by the number of its divisors (140).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56000003) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 7999997 + ... + 8000003.

Almost surely, 256000000 is an apocalyptic number.

56000000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79920852).

56000000 is an abundant number, since it is smaller than the sum of its proper divisors (103841704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56000000 is an frugal number, since it uses more digits than its factorization.

56000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55 (or 14 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 56000000 is about 7483.3147735479. The cubic root of 56000000 is about 382.5862365545.

The spelling of 56000000 in words is "fifty-six million", and thus it is an aban number, an eban number, and an uban number.

Divisors: 1 2 4 5 7 8 10 14 16 20 25 28 32 35 40 50 56 64 70 80 100 112 125 128 140 160 175 200 224 250 256 280 320 350 400 448 500 512 560 625 640 700 800 875 896 1000 1120 1250 1280 1400 1600 1750 1792 2000 2240 2500 2560 2800 3125 3200 3500 3584 4000 4375 4480 5000 5600 6250 6400 7000 8000 8750 8960 10000 11200 12500 12800 14000 15625 16000 17500 17920 20000 21875 22400 25000 28000 31250 32000 35000 40000 43750 44800 50000 56000 62500 64000 70000 80000 87500 89600 100000 109375 112000 125000 140000 160000 175000 200000 218750 224000 250000 280000 320000 350000 400000 437500 448000 500000 560000 700000 800000 875000 1000000 1120000 1400000 1600000 1750000 2000000 2240000 2800000 3500000 4000000 5600000 7000000 8000000 11200000 14000000 28000000 56000000