15013881 has 12 divisors (see below), whose sum is σ = 21772608. Its totient is φ = 9969624.

The previous prime is 15013879. The next prime is 15013891. The reversal of 15013881 is 18831051.

It is not a de Polignac number, because 15013881 - 2¹ = 15013879 is a prime.

It is a super-2 number, since 2×15013881² = 450833245364322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15013891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 805 + ... + 5538.

It is an arithmetic number, because the mean of its divisors is an integer number (1814384).

Almost surely, 2^15013881 is an apocalyptic number.

It is an amenable number.

15013881 is a deficient number, since it is larger than the sum of its proper divisors (6758727).

15013881 is a wasteful number, since it uses less digits than its factorization.

15013881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6612 (or 6609 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 15013881 is about 3874.7749612074. The cubic root of 15013881 is about 246.6972584005.

The spelling of 15013881 in words is "fifteen million, thirteen thousand, eight hundred eighty-one".