15249980 has 12 divisors (see below), whose sum is σ = 32025000. Its totient is φ = 6099984.

The previous prime is 15249979. The next prime is 15250009. The reversal of 15249980 is 8994251.

15249980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381230 + ... + 381269.

It is an arithmetic number, because the mean of its divisors is an integer number (2668750).

Almost surely, 2^15249980 is an apocalyptic number.

15249980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15249980 is an abundant number, since it is smaller than the sum of its proper divisors (16775020).

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

15249980 is a wasteful number, since it uses less digits than its factorization.

15249980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762508 (or 762506 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 15249980 is about 3905.1222772149. The cubic root of 15249980 is about 247.9836747839.

The spelling of 15249980 in words is "fifteen million, two hundred forty-nine thousand, nine hundred eighty".