130191972 has 24 divisors (see below), whose sum is σ = 304323936. Its totient is φ = 43319808.

The previous prime is 130191961. The next prime is 130191977. The reversal of 130191972 is 279191031.

It is not an unprimeable number, because it can be changed into a prime (130191977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2478 + ... + 16325.

It is an arithmetic number, because the mean of its divisors is an integer number (12680164).

Almost surely, 2^130191972 is an apocalyptic number.

130191972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

130191972 is an abundant number, since it is smaller than the sum of its proper divisors (174131964).

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

130191972 is a wasteful number, since it uses less digits than its factorization.

130191972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19387 (or 19385 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 130191972 is about 11410.1696744615. The cubic root of 130191972 is about 506.8289359826.

The spelling of 130191972 in words is "one hundred thirty million, one hundred ninety-one thousand, nine hundred seventy-two".