15489315 has 12 divisors (see below), whose sum is σ = 26848224. Its totient is φ = 8260944.

The previous prime is 15489307. The next prime is 15489317. The reversal of 15489315 is 51398451.

15489315 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15489315 - 2³ = 15489307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15489315.

It is not an unprimeable number, because it can be changed into a prime (15489317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172059 + ... + 172148.

It is an arithmetic number, because the mean of its divisors is an integer number (2237352).

Almost surely, 2^15489315 is an apocalyptic number.

15489315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15489315 is a deficient number, since it is larger than the sum of its proper divisors (11358909).

15489315 is a wasteful number, since it uses less digits than its factorization.

15489315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344218 (or 344215 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 15489315 is about 3935.6467067053. The cubic root of 15489315 is about 249.2742418056.

The spelling of 15489315 in words is "fifteen million, four hundred eighty-nine thousand, three hundred fifteen".