12532840 has 16 divisors (see below), whose sum is σ = 28198980. Its totient is φ = 5013120.

The previous prime is 12532831. The next prime is 12532853. The reversal of 12532840 is 4823521.

It can be written as a sum of positive squares in 2 ways, for example, as 10407076 + 2125764 = 3226^2 + 1458^2 .

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, 156621 + ... + 156700.

Almost surely, 2^12532840 is an apocalyptic number.

12532840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12532840 is an abundant number, since it is smaller than the sum of its proper divisors (15666140).

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

12532840 is a wasteful number, since it uses less digits than its factorization.

12532840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313332 (or 313328 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 12532840 is about 3540.1751369106. The cubic root of 12532840 is about 232.2825036592.

The spelling of 12532840 in words is "twelve million, five hundred thirty-two thousand, eight hundred forty".