15240315 has 16 divisors (see below), whose sum is σ = 24980256. Its totient is φ = 7929600.

The previous prime is 15240311. The next prime is 15240353. The reversal of 15240315 is 51304251.

It is not a de Polignac number, because 15240315 - 2² = 15240311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15240291 and 15240300.

It is not an unprimeable number, because it can be changed into a prime (15240311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11776 + ... + 13005.

It is an arithmetic number, because the mean of its divisors is an integer number (1561266).

Almost surely, 2^15240315 is an apocalyptic number.

15240315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15240315 is a deficient number, since it is larger than the sum of its proper divisors (9739941).

15240315 is a wasteful number, since it uses less digits than its factorization.

15240315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24830.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 15240315 is about 3903.8846038273. The cubic root of 15240315 is about 247.9312753987.

Adding to 15240315 its reverse (51304251), we get a palindrome (66544566).

The spelling of 15240315 in words is "fifteen million, two hundred forty thousand, three hundred fifteen".