15129012 has 12 divisors (see below), whose sum is σ = 35301056. Its totient is φ = 5043000.

The previous prime is 15128999. The next prime is 15129019. The reversal of 15129012 is 21092151.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×15129012² = 457774008192288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15129012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15129019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 630364 + ... + 630387.

Almost surely, 2^15129012 is an apocalyptic number.

15129012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15129012 is an abundant number, since it is smaller than the sum of its proper divisors (20172044).

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

15129012 is a wasteful number, since it uses less digits than its factorization.

15129012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260758 (or 1260756 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 15129012 is about 3889.6030645813. The cubic root of 15129012 is about 247.3262365685.

The spelling of 15129012 in words is "fifteen million, one hundred twenty-nine thousand, twelve".