15427992 has 16 divisors (see below), whose sum is σ = 38570040. Its totient is φ = 5142656.

The previous prime is 15427949. The next prime is 15428011. The reversal of 15427992 is 29972451.

It is a self number, because there is not a number n which added to its sum of digits gives 15427992.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 321393 + ... + 321440.

Almost surely, 2^15427992 is an apocalyptic number.

15427992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15427992 is an abundant number, since it is smaller than the sum of its proper divisors (23142048).

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

15427992 is a wasteful number, since it uses less digits than its factorization.

15427992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642842 (or 642838 counting only the distinct ones).

The product of its digits is 45360, while the sum is 39.

The square root of 15427992 is about 3927.8482659084. The cubic root of 15427992 is about 248.9448435112.

The spelling of 15427992 in words is "fifteen million, four hundred twenty-seven thousand, nine hundred ninety-two".