15000012 has 24 divisors (see below), whose sum is σ = 38889200. Its totient is φ = 4999968.

The previous prime is 14999981. The next prime is 15000017. The reversal of 15000012 is 21000051.

It is a happy number.

15000012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 14999958 and 15000003.

It is not an unprimeable number, because it can be changed into a prime (15000017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69337 + ... + 69552.

Almost surely, 2^15000012 is an apocalyptic number.

15000012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15000012 is an abundant number, since it is smaller than the sum of its proper divisors (23889188).

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

15000012 is a wasteful number, since it uses less digits than its factorization.

15000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138902 (or 138894 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

The square root of 15000012 is about 3872.9848954004. The cubic root of 15000012 is about 246.6212731987.

Adding to 15000012 its reverse (21000051), we get a palindrome (36000063).

The spelling of 15000012 in words is "fifteen million, twelve", and thus it is an aban number and an uban number.