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47000000 = 265647
BaseRepresentation
bin1011001101001…
…0100111000000
310021102211212202
42303102213000
544013000000
64355212332
71110331145
oct263224700
9107384782
1047000000
1124591883
12138a70a8
139977a68
1463563cc
1541d5dd5
hex2cd29c0

47000000 has 98 divisors (see below), whose sum is σ = 119060976. Its totient is φ = 18400000.

The previous prime is 46999987. The next prime is 47000011. The reversal of 47000000 is 74.

Adding to 47000000 its reverse (74), we get a palindrome (47000074).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 999977 + ... + 1000023.

Almost surely, 247000000 is an apocalyptic number.

47000000 is a gapful number since it is divisible by the number (40) 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 47000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59530488).

47000000 is an abundant number, since it is smaller than the sum of its proper divisors (72060976).

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

47000000 is an frugal number, since it uses more digits than its factorization.

47000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 11.

The square root of 47000000 is about 6855.6546004010. The cubic root of 47000000 is about 360.8826080139.

The spelling of 47000000 in words is "forty-seven million", and thus it is an aban number and an uban number.

Divisors: 1 2 4 5 8 10 16 20 25 32 40 47 50 64 80 94 100 125 160 188 200 235 250 320 376 400 470 500 625 752 800 940 1000 1175 1250 1504 1600 1880 2000 2350 2500 3008 3125 3760 4000 4700 5000 5875 6250 7520 8000 9400 10000 11750 12500 15040 15625 18800 20000 23500 25000 29375 31250 37600 40000 47000 50000 58750 62500 75200 94000 100000 117500 125000 146875 188000 200000 235000 250000 293750 376000 470000 500000 587500 734375 940000 1000000 1175000 1468750 1880000 2350000 2937500 4700000 5875000 9400000 11750000 23500000 47000000