15255920 has 20 divisors (see below), whose sum is σ = 35470200. Its totient is φ = 6102336.

The previous prime is 15255899. The next prime is 15255941. The reversal of 15255920 is 2955251.

It is an interprime number because it is at equal distance from previous prime (15255899) and next prime (15255941).

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95270 + ... + 95429.

It is an arithmetic number, because the mean of its divisors is an integer number (1773510).

Almost surely, 2^15255920 is an apocalyptic number.

15255920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15255920 is an abundant number, since it is smaller than the sum of its proper divisors (20214280).

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

15255920 is a wasteful number, since it uses less digits than its factorization.

15255920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190712 (or 190706 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 15255920 is about 3905.8827427356. The cubic root of 15255920 is about 248.0158678713.

The spelling of 15255920 in words is "fifteen million, two hundred fifty-five thousand, nine hundred twenty".