130978788 has 12 divisors (see below), whose sum is σ = 305617200. Its totient is φ = 43659592.

The previous prime is 130978763. The next prime is 130978789. The reversal of 130978788 is 887879031.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 130978788.

It is not an unprimeable number, because it can be changed into a prime (130978789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5457438 + ... + 5457461.

It is an arithmetic number, because the mean of its divisors is an integer number (25468100).

Almost surely, 2^130978788 is an apocalyptic number.

It is an amenable number.

130978788 is an abundant number, since it is smaller than the sum of its proper divisors (174638412).

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

130978788 is a wasteful number, since it uses less digits than its factorization.

130978788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10914906 (or 10914904 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 51.

The square root of 130978788 is about 11444.5964542224. The cubic root of 130978788 is about 507.8478939900.

The spelling of 130978788 in words is "one hundred thirty million, nine hundred seventy-eight thousand, seven hundred eighty-eight".