15240872 has 8 divisors (see below), whose sum is σ = 28576650. Its totient is φ = 7620432.

The previous prime is 15240859. The next prime is 15240893. The reversal of 15240872 is 27804251.

It can be written as a sum of positive squares in only one way, i.e., 15100996 + 139876 = 3886^2 + 374^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×15240872³ (a number of 23 digits) contains 333 as substring.

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 as a sum of consecutive naturals, namely, 952547 + ... + 952562.

Almost surely, 2^15240872 is an apocalyptic number.

It is an amenable number.

15240872 is a deficient number, since it is larger than the sum of its proper divisors (13335778).

15240872 is a wasteful number, since it uses less digits than its factorization.

15240872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905115 (or 1905111 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 15240872 is about 3903.9559423744. The cubic root of 15240872 is about 247.9342958095.

The spelling of 15240872 in words is "fifteen million, two hundred forty thousand, eight hundred seventy-two".