12538980 has 36 divisors (see below), whose sum is σ = 38035452. Its totient is φ = 3343680.

The previous prime is 12538969. The next prime is 12538987. The reversal of 12538980 is 8983521.

It can be written as a sum of positive squares in 2 ways, for example, as 2196324 + 10342656 = 1482^2 + 3216^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12538987) 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 11 ways as a sum of consecutive naturals, for example, 34651 + ... + 35010.

Almost surely, 2^12538980 is an apocalyptic number.

12538980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12538980 is an abundant number, since it is smaller than the sum of its proper divisors (25496472).

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

12538980 is a wasteful number, since it uses less digits than its factorization.

12538980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69676 (or 69671 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 12538980 is about 3541.0422194603. The cubic root of 12538980 is about 232.3204301981.

The spelling of 12538980 in words is "twelve million, five hundred thirty-eight thousand, nine hundred eighty".