15479881 has 16 divisors (see below), whose sum is σ = 16842240. Its totient is φ = 14192640.

The previous prime is 15479879. The next prime is 15479887. The reversal of 15479881 is 18897451.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 15479881 - 2¹ = 15479879 is a prime.

It is a super-2 number, since 2×15479881² = 479253431548322, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (80640) is a multiple of the sum of its prime divisors (384).

It is not an unprimeable number, because it can be changed into a prime (15479887) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 60105 + ... + 60361.

It is an arithmetic number, because the mean of its divisors is an integer number (1052640).

Almost surely, 2^15479881 is an apocalyptic number.

It is an amenable number.

15479881 is a deficient number, since it is larger than the sum of its proper divisors (1362359).

15479881 is a wasteful number, since it uses less digits than its factorization.

15479881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384.

The product of its digits is 80640, while the sum is 43.

The square root of 15479881 is about 3934.4479917772. The cubic root of 15479881 is about 249.2236234537.

The spelling of 15479881 in words is "fifteen million, four hundred seventy-nine thousand, eight hundred eighty-one".