15772056 has 128 divisors (see below), whose sum is σ = 45619200. Its totient is φ = 4515840.

The previous prime is 15772037. The next prime is 15772061. The reversal of 15772056 is 65027751.

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 31 ways as a sum of consecutive naturals, for example, 366771 + ... + 366813.

It is an arithmetic number, because the mean of its divisors is an integer number (356400).

Almost surely, 2^15772056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15772056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22809600).

15772056 is an abundant number, since it is smaller than the sum of its proper divisors (29847144).

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

15772056 is a wasteful number, since it uses less digits than its factorization.

15772056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 33.

The square root of 15772056 is about 3971.4047892402. The cubic root of 15772056 is about 250.7818509540.

The spelling of 15772056 in words is "fifteen million, seven hundred seventy-two thousand, fifty-six".