15121672 has 16 divisors (see below), whose sum is σ = 29586240. Its totient is φ = 7232016.

The previous prime is 15121657. The next prime is 15121693. The reversal of 15121672 is 27612151.

15121672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40908 + ... + 41275.

It is an arithmetic number, because the mean of its divisors is an integer number (1849140).

Almost surely, 2^15121672 is an apocalyptic number.

It is an amenable number.

15121672 is a deficient number, since it is larger than the sum of its proper divisors (14464568).

15121672 is a wasteful number, since it uses less digits than its factorization.

15121672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82212 (or 82208 counting only the distinct ones).

The product of its digits is 840, while the sum is 25.

The square root of 15121672 is about 3888.6594091023. The cubic root of 15121672 is about 247.2862324528.

The spelling of 15121672 in words is "fifteen million, one hundred twenty-one thousand, six hundred seventy-two".