15251940 has 72 divisors (see below), whose sum is σ = 50476608. Its totient is φ = 3696960.

The previous prime is 15251939. The next prime is 15251953. The reversal of 15251940 is 4915251.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1872 + ... + 5831.

It is an arithmetic number, because the mean of its divisors is an integer number (701064).

Almost surely, 2^15251940 is an apocalyptic number.

15251940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15251940 is an abundant number, since it is smaller than the sum of its proper divisors (35224668).

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

15251940 is a wasteful number, since it uses less digits than its factorization.

15251940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7729 (or 7724 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 15251940 is about 3905.3732216012. The cubic root of 15251940 is about 247.9942983427.

The spelling of 15251940 in words is "fifteen million, two hundred fifty-one thousand, nine hundred forty".