130778838 has 12 divisors (see below), whose sum is σ = 283354188. Its totient is φ = 43592940.

The previous prime is 130778827. The next prime is 130778887. The reversal of 130778838 is 838877031.

It is a junction number, because it is equal to n+sod(n) for n = 130778793 and 130778802.

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, 3632728 + ... + 3632763.

It is an arithmetic number, because the mean of its divisors is an integer number (23612849).

Almost surely, 2^130778838 is an apocalyptic number.

130778838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

130778838 is an abundant number, since it is smaller than the sum of its proper divisors (152575350).

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

130778838 is a wasteful number, since it uses less digits than its factorization.

130778838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7265499 (or 7265496 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 130778838 is about 11435.8575542020. The cubic root of 130778838 is about 507.5893383778.

The spelling of 130778838 in words is "one hundred thirty million, seven hundred seventy-eight thousand, eight hundred thirty-eight".