130793840 has 20 divisors (see below), whose sum is σ = 304095864. Its totient is φ = 52317504.

The previous prime is 130793791. The next prime is 130793863. The reversal of 130793840 is 48397031.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 130793840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 817382 + ... + 817541.

Almost surely, 2^130793840 is an apocalyptic number.

130793840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130793840 is an abundant number, since it is smaller than the sum of its proper divisors (173302024).

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

130793840 is a wasteful number, since it uses less digits than its factorization.

130793840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634936 (or 1634930 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 130793840 is about 11436.5134547204. The cubic root of 130793840 is about 507.6087466251.

The spelling of 130793840 in words is "one hundred thirty million, seven hundred ninety-three thousand, eight hundred forty".