15328290 has 16 divisors (see below), whose sum is σ = 36787968. Its totient is φ = 4087536.

The previous prime is 15328241. The next prime is 15328303. The reversal of 15328290 is 9282351.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 510943 = 15328290 / (1 + 5 + 3 + 2 + 8 + 2 + 9 + 0).

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 7 ways as a sum of consecutive naturals, for example, 255442 + ... + 255501.

It is an arithmetic number, because the mean of its divisors is an integer number (2299248).

Almost surely, 2^15328290 is an apocalyptic number.

15328290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15328290 is an abundant number, since it is smaller than the sum of its proper divisors (21459678).

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

15328290 is a wasteful number, since it uses less digits than its factorization.

15328290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510953.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 15328290 is about 3915.1360129630. The cubic root of 15328290 is about 248.4074230034.

The spelling of 15328290 in words is "fifteen million, three hundred twenty-eight thousand, two hundred ninety".