15264240 has 40 divisors (see below), whose sum is σ = 47319888. Its totient is φ = 4070400.

The previous prime is 15264233. The next prime is 15264241. The reversal of 15264240 is 4246251.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 15264240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15264241) 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 7 ways as a sum of consecutive naturals, for example, 31561 + ... + 32040.

Almost surely, 2^15264240 is an apocalyptic number.

15264240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15264240 is an abundant number, since it is smaller than the sum of its proper divisors (32055648).

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

15264240 is a wasteful number, since it uses less digits than its factorization.

15264240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63617 (or 63611 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 15264240 is about 3906.9476576990. The cubic root of 15264240 is about 248.0609458261.

The spelling of 15264240 in words is "fifteen million, two hundred sixty-four thousand, two hundred forty".