130721880 has 64 divisors (see below), whose sum is σ = 409224960. Its totient is φ = 33342848.

The previous prime is 130721867. The next prime is 130721893. The reversal of 130721880 is 88127031.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (130721867) and next prime (130721893).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20922 + ... + 26441.

It is an arithmetic number, because the mean of its divisors is an integer number (6394140).

Almost surely, 2^130721880 is an apocalyptic number.

130721880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130721880 is an abundant number, since it is smaller than the sum of its proper divisors (278503080).

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

130721880 is a wasteful number, since it uses less digits than its factorization.

130721880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47400 (or 47396 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 130721880 is about 11433.3669581624. The cubic root of 130721880 is about 507.5156376878.

The spelling of 130721880 in words is "one hundred thirty million, seven hundred twenty-one thousand, eight hundred eighty".