130138878 has 16 divisors (see below), whose sum is σ = 260591760. Its totient is φ = 43327296.

The previous prime is 130138871. The next prime is 130138891. The reversal of 130138878 is 878831031.

130138878 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×130138878² = 33872255134197768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130138871) 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, 7513 + ... + 17796.

It is an arithmetic number, because the mean of its divisors is an integer number (16286985).

Almost surely, 2^130138878 is an apocalyptic number.

130138878 is an abundant number, since it is smaller than the sum of its proper divisors (130452882).

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

130138878 is a wasteful number, since it uses less digits than its factorization.

130138878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26171.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 130138878 is about 11407.8428285106. The cubic root of 130138878 is about 506.7600294441.

The spelling of 130138878 in words is "one hundred thirty million, one hundred thirty-eight thousand, eight hundred seventy-eight".