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56984731 = 172238573
BaseRepresentation
bin1101100101100…
…0010010011011
310222020010100121
43121120102123
5104042002411
65353214111
71261235146
oct331302233
9128203317
1056984731
112a191521
1217101337
13ba6269b
1477d505d
155009571
hex365849b

56984731 has 12 divisors (see below), whose sum is σ = 63173232. Its totient is φ = 51294848.

The previous prime is 56984713. The next prime is 56984747. The reversal of 56984731 is 13748965.

56984731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56984731 - 215 = 56951963 is a prime.

It is a super-2 number, since 2×569847312 = 6494519134284722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56984791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2361 + ... + 10933.

It is an arithmetic number, because the mean of its divisors is an integer number (5264436).

Almost surely, 256984731 is an apocalyptic number.

56984731 is a deficient number, since it is larger than the sum of its proper divisors (6188501).

56984731 is a wasteful number, since it uses less digits than its factorization.

56984731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8630 (or 8613 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 56984731 is about 7548.8231533134. The cubic root of 56984731 is about 384.8157458694.

The spelling of 56984731 in words is "fifty-six million, nine hundred eighty-four thousand, seven hundred thirty-one".

Divisors: 1 17 23 289 391 6647 8573 145741 197179 2477597 3352043 56984731