130656520 has 64 divisors (see below), whose sum is σ = 300672000. Its totient is φ = 51088128.

The previous prime is 130656511. The next prime is 130656541. The reversal of 130656520 is 25656031.

It is a super-2 number, since 2×130656520² = 34142252437020800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546561 + ... + 546799.

It is an arithmetic number, because the mean of its divisors is an integer number (4698000).

Almost surely, 2^130656520 is an apocalyptic number.

130656520 is a gapful number since it is divisible by the number (10) 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 130656520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150336000).

130656520 is an abundant number, since it is smaller than the sum of its proper divisors (170015480).

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

130656520 is a wasteful number, since it uses less digits than its factorization.

130656520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 498 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 130656520 is about 11430.5083001588. The cubic root of 130656520 is about 507.4310388635.

The spelling of 130656520 in words is "one hundred thirty million, six hundred fifty-six thousand, five hundred twenty".