130236656 has 30 divisors (see below), whose sum is σ = 277362456. Its totient is φ = 59197600.

The previous prime is 130236629. The next prime is 130236661. The reversal of 130236656 is 656632031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31700 + ... + 35571.

Almost surely, 2^130236656 is an apocalyptic number.

130236656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

130236656 is an abundant number, since it is smaller than the sum of its proper divisors (147125800).

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

130236656 is a wasteful number, since it uses less digits than its factorization.

130236656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67301 (or 67284 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 130236656 is about 11412.1275842851. The cubic root of 130236656 is about 506.8869133252.

Adding to 130236656 its reverse (656632031), we get a palindrome (786868687).

The spelling of 130236656 in words is "one hundred thirty million, two hundred thirty-six thousand, six hundred fifty-six".