15138752 has 28 divisors (see below), whose sum is σ = 30745176. Its totient is φ = 7392000.

The previous prime is 15138733. The next prime is 15138769. The reversal of 15138752 is 25783151.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2 + ... + 5502.

It is an arithmetic number, because the mean of its divisors is an integer number (1098042).

Almost surely, 2^15138752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15138752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15372588).

15138752 is an abundant number, since it is smaller than the sum of its proper divisors (15606424).

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

15138752 is an equidigital number, since it uses as much as digits as its factorization.

15138752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5556 (or 5546 counting only the distinct ones).

The product of its digits is 8400, while the sum is 32.

The square root of 15138752 is about 3890.8549189092. The cubic root of 15138752 is about 247.3793010773.

The spelling of 15138752 in words is "fifteen million, one hundred thirty-eight thousand, seven hundred fifty-two".