15396864 has 104 divisors (see below), whose sum is σ = 47180160. Its totient is φ = 4374528.

The previous prime is 15396839. The next prime is 15396877. The reversal of 15396864 is 46869351.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85927 + ... + 86105.

Almost surely, 2^15396864 is an apocalyptic number.

15396864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15396864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23590080).

15396864 is an abundant number, since it is smaller than the sum of its proper divisors (31783296).

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

15396864 is an equidigital number, since it uses as much as digits as its factorization.

15396864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 191 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 15396864 is about 3923.8837903281. The cubic root of 15396864 is about 248.7773044782. Note that the first 3 decimals are identical.

The spelling of 15396864 in words is "fifteen million, three hundred ninety-six thousand, eight hundred sixty-four".