15138672 has 20 divisors (see below), whose sum is σ = 39108360. Its totient is φ = 5046208.

The previous prime is 15138647. The next prime is 15138677. The reversal of 15138672 is 27683151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15138677) 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, 157647 + ... + 157742.

It is an arithmetic number, because the mean of its divisors is an integer number (1955418).

Almost surely, 2^15138672 is an apocalyptic number.

15138672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15138672 is an abundant number, since it is smaller than the sum of its proper divisors (23969688).

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

15138672 is a wasteful number, since it uses less digits than its factorization.

15138672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315400 (or 315394 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 15138672 is about 3890.8446383787. The cubic root of 15138672 is about 247.3788653219.

The spelling of 15138672 in words is "fifteen million, one hundred thirty-eight thousand, six hundred seventy-two".