12520452 has 24 divisors (see below), whose sum is σ = 33388096. Its totient is φ = 3577248.

The previous prime is 12520451. The next prime is 12520463. The reversal of 12520452 is 25402521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (12520451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74443 + ... + 74610.

Almost surely, 2^12520452 is an apocalyptic number.

12520452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12520452 is an abundant number, since it is smaller than the sum of its proper divisors (20867644).

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

12520452 is a wasteful number, since it uses less digits than its factorization.

12520452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149067 (or 149065 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 12520452 is about 3538.4250733907. The cubic root of 12520452 is about 232.2059457452.

Adding to 12520452 its reverse (25402521), we get a palindrome (37922973).

The spelling of 12520452 in words is "twelve million, five hundred twenty thousand, four hundred fifty-two".