15000072 has 32 divisors (see below), whose sum is σ = 37838880. Its totient is φ = 4954880.

The previous prime is 15000067. The next prime is 15000079. The reversal of 15000072 is 27000051.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (15000079) 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, 54 + ... + 5477.

It is an arithmetic number, because the mean of its divisors is an integer number (1182465).

Almost surely, 2^15000072 is an apocalyptic number.

15000072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15000072 is an abundant number, since it is smaller than the sum of its proper divisors (22838808).

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

15000072 is a wasteful number, since it uses less digits than its factorization.

15000072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5653 (or 5649 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 15.

The square root of 15000072 is about 3872.9926413563. The cubic root of 15000072 is about 246.6216020263.

The spelling of 15000072 in words is "fifteen million, seventy-two", and thus it is an aban number and an uban number.