15315340 has 12 divisors (see below), whose sum is σ = 32162256. Its totient is φ = 6126128.

The previous prime is 15315281. The next prime is 15315347. The reversal of 15315340 is 4351351.

It is a happy number.

15315340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (15315347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382864 + ... + 382903.

It is an arithmetic number, because the mean of its divisors is an integer number (2680188).

Almost surely, 2^15315340 is an apocalyptic number.

15315340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15315340 is an abundant number, since it is smaller than the sum of its proper divisors (16846916).

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

15315340 is a wasteful number, since it uses less digits than its factorization.

15315340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765776 (or 765774 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 15315340 is about 3913.4818256892. The cubic root of 15315340 is about 248.3374481949.

Adding to 15315340 its reverse (4351351), we get a palindrome (19666691).

The spelling of 15315340 in words is "fifteen million, three hundred fifteen thousand, three hundred forty".