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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.