15379875 has 120 divisors (see below), whose sum is σ = 34429824. Its totient is φ = 6804000.

The previous prime is 15379843. The next prime is 15379913. The reversal of 15379875 is 57897351.

It is not a de Polignac number, because 15379875 - 2⁵ = 15379843 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

Its product of digits (264600) is a multiple of the sum of its prime factors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 15379875.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 496110 + ... + 496140.

It is a vampire number, since it can be written as 1953 ⋅ 7875 (with its own digits).

Almost surely, 2^15379875 is an apocalyptic number.

15379875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15379875 is an abundant number, since it is smaller than the sum of its proper divisors (19049949).

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

15379875 is an equidigital number, since it uses as much as digits as its factorization.

15379875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 46 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The square root of 15379875 is about 3921.7183733665. The cubic root of 15379875 is about 248.6857699707.

The spelling of 15379875 in words is "fifteen million, three hundred seventy-nine thousand, eight hundred seventy-five".