15252390 has 24 divisors (see below), whose sum is σ = 39656448. Its totient is φ = 4067280.

The previous prime is 15252389. The next prime is 15252407. The reversal of 15252390 is 9325251.

15252390 is a `hidden beast` number, since 1 + 52 + 523 + 90 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84646 + ... + 84825.

It is an arithmetic number, because the mean of its divisors is an integer number (1652352).

Almost surely, 2^15252390 is an apocalyptic number.

15252390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15252390 is an abundant number, since it is smaller than the sum of its proper divisors (24404058).

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

15252390 is a wasteful number, since it uses less digits than its factorization.

15252390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169484 (or 169481 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 15252390 is about 3905.4308341078. The cubic root of 15252390 is about 247.9967372967.

It can be divided in two parts, 15 and 252390, that added together give a triangular number (252405 = T₇₁₀).

The spelling of 15252390 in words is "fifteen million, two hundred fifty-two thousand, three hundred ninety".