12520332 has 72 divisors (see below), whose sum is σ = 35835072. Its totient is φ = 3790800.

The previous prime is 12520309. The next prime is 12520337. The reversal of 12520332 is 23302521.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12520337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10107 + ... + 11277.

Almost surely, 2^12520332 is an apocalyptic number.

12520332 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 12520332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17917536).

12520332 is an abundant number, since it is smaller than the sum of its proper divisors (23314740).

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

12520332 is a wasteful number, since it uses less digits than its factorization.

12520332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201 (or 1187 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 12520332 is about 3538.4081166536. The cubic root of 12520332 is about 232.2052038976.

Adding to 12520332 its reverse (23302521), we get a palindrome (35822853).

The spelling of 12520332 in words is "twelve million, five hundred twenty thousand, three hundred thirty-two".