130657992 has 64 divisors (see below), whose sum is σ = 339508800. Its totient is φ = 41852160.

The previous prime is 130657949. The next prime is 130657993. The reversal of 130657992 is 299756031.

130657992 = T₂₃₃ + T₂₃₄ + ... + T₉₂₆.

It is not an unprimeable number, because it can be changed into a prime (130657993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241242 + ... + 241782.

It is an arithmetic number, because the mean of its divisors is an integer number (5304825).

Almost surely, 2^130657992 is an apocalyptic number.

130657992 is a gapful number since it is divisible by the number (12) 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 130657992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169754400).

130657992 is an abundant number, since it is smaller than the sum of its proper divisors (208850808).

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

130657992 is a wasteful number, since it uses less digits than its factorization.

130657992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926 (or 922 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 42.

The square root of 130657992 is about 11430.5726890651. The cubic root of 130657992 is about 507.4329444597.

The spelling of 130657992 in words is "one hundred thirty million, six hundred fifty-seven thousand, nine hundred ninety-two".