130552640 has 28 divisors (see below), whose sum is σ = 310879236. Its totient is φ = 52220928.

The previous prime is 130552633. The next prime is 130552657. The reversal of 130552640 is 46255031.

It can be written as a sum of positive squares in 2 ways, for example, as 94167616 + 36385024 = 9704^2 + 6032^2 .

It is a congruent number.

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, 203669 + ... + 204308.

Almost surely, 2^130552640 is an apocalyptic number.

130552640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130552640 is an abundant number, since it is smaller than the sum of its proper divisors (180326596).

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

130552640 is an equidigital number, since it uses as much as digits as its factorization.

130552640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407994 (or 407984 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 130552640 is about 11425.9634167102. The cubic root of 130552640 is about 507.2965235398.

The spelling of 130552640 in words is "one hundred thirty million, five hundred fifty-two thousand, six hundred forty".