15138252 has 30 divisors (see below), whose sum is σ = 39575228. Its totient is φ = 5045976.

The previous prime is 15138241. The next prime is 15138259. The reversal of 15138252 is 25283151.

It is a happy number.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (15138259) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 23038 + ... + 23685.

Almost surely, 2^15138252 is an apocalyptic number.

15138252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15138252 is an abundant number, since it is smaller than the sum of its proper divisors (24436976).

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

15138252 is a wasteful number, since it uses less digits than its factorization.

15138252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46739 (or 46728 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 15138252 is about 3890.7906651476. The cubic root of 15138252 is about 247.3765775808.

The spelling of 15138252 in words is "fifteen million, one hundred thirty-eight thousand, two hundred fifty-two".