15000139 has 16 divisors (see below), whose sum is σ = 19687680. Its totient is φ = 11072160.

The previous prime is 15000131. The next prime is 15000151. The reversal of 15000139 is 93100051.

15000139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15000139 - 2³ = 15000131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15000131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3664 + ... + 6589.

It is an arithmetic number, because the mean of its divisors is an integer number (1230480).

Almost surely, 2^15000139 is an apocalyptic number.

15000139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

15000139 is a deficient number, since it is larger than the sum of its proper divisors (4687541).

15000139 is a wasteful number, since it uses less digits than its factorization.

15000139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10290.

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 15000139 is about 3873.0012909887. The cubic root of 15000139 is about 246.6219692162.

The spelling of 15000139 in words is "fifteen million, one hundred thirty-nine", and thus it is an aban number.