15312252 has 48 divisors (see below), whose sum is σ = 37900800. Its totient is φ = 4798080.

The previous prime is 15312251. The next prime is 15312259. The reversal of 15312252 is 25221351.

It is a super-2 number, since 2×15312252² = 468930122623008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15312251) 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, 54352 + ... + 54632.

It is an arithmetic number, because the mean of its divisors is an integer number (789600).

Almost surely, 2^15312252 is an apocalyptic number.

15312252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15312252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18950400).

15312252 is an abundant number, since it is smaller than the sum of its proper divisors (22588548).

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

15312252 is a wasteful number, since it uses less digits than its factorization.

15312252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546 (or 544 counting only the distinct ones).

The product of its digits is 600, while the sum is 21.

The square root of 15312252 is about 3913.0872722187. The cubic root of 15312252 is about 248.3207564861.

Subtracting 15312252 from its reverse (25221351), we obtain a palindrome (9909099).

The spelling of 15312252 in words is "fifteen million, three hundred twelve thousand, two hundred fifty-two".