15728090 has 32 divisors (see below), whose sum is σ = 33765120. Its totient is φ = 5157504.

The previous prime is 15728087. The next prime is 15728101. The reversal of 15728090 is 9082751.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3275 + ... + 6494.

It is an arithmetic number, because the mean of its divisors is an integer number (1055160).

Almost surely, 2^15728090 is an apocalyptic number.

15728090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15728090 is an abundant number, since it is smaller than the sum of its proper divisors (18037030).

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

15728090 is a wasteful number, since it uses less digits than its factorization.

15728090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9806.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 15728090 is about 3965.8656053881. The cubic root of 15728090 is about 250.5486085673.

The spelling of 15728090 in words is "fifteen million, seven hundred twenty-eight thousand, ninety".