15796881 has 6 divisors (see below), whose sum is σ = 22817730. Its totient is φ = 10531248.

The previous prime is 15796811. The next prime is 15796903. The reversal of 15796881 is 18869751.

It can be written as a sum of positive squares in only one way, i.e., 12852225 + 2944656 = 3585^2 + 1716^2 .

It is not a de Polignac number, because 15796881 - 2¹⁴ = 15780497 is a prime.

It is a super-2 number, since 2×15796881² = 499082898656322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15796811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 877596 + ... + 877613.

It is an arithmetic number, because the mean of its divisors is an integer number (3802955).

Almost surely, 2^15796881 is an apocalyptic number.

It is an amenable number.

15796881 is a deficient number, since it is larger than the sum of its proper divisors (7020849).

15796881 is a wasteful number, since it uses less digits than its factorization.

15796881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755215 (or 1755212 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The square root of 15796881 is about 3974.5290287026. The cubic root of 15796881 is about 250.9133577137.

The spelling of 15796881 in words is "fifteen million, seven hundred ninety-six thousand, eight hundred eighty-one".