15023997 has 12 divisors (see below), whose sum is σ = 21868704. Its totient is φ = 9938760.

The previous prime is 15023993. The next prime is 15024011. The reversal of 15023997 is 79932051.

It is not a de Polignac number, because 15023997 - 2² = 15023993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15023993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5193 + ... + 7550.

It is an arithmetic number, because the mean of its divisors is an integer number (1822392).

Almost surely, 2^15023997 is an apocalyptic number.

It is an amenable number.

15023997 is a deficient number, since it is larger than the sum of its proper divisors (6844707).

15023997 is a wasteful number, since it uses less digits than its factorization.

15023997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12880 (or 12877 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 15023997 is about 3876.0801075313. The cubic root of 15023997 is about 246.7526522320.

The spelling of 15023997 in words is "fifteen million, twenty-three thousand, nine hundred ninety-seven".