130072640 has 56 divisors (see below), whose sum is σ = 310969152. Its totient is φ = 51822080.

The previous prime is 130072633. The next prime is 130072667. The reversal of 130072640 is 46270031.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98867 + ... + 100173.

Almost surely, 2^130072640 is an apocalyptic number.

130072640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130072640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155484576).

130072640 is an abundant number, since it is smaller than the sum of its proper divisors (180896512).

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

130072640 is a wasteful number, since it uses less digits than its factorization.

130072640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635 (or 1625 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 130072640 is about 11404.9392808555. The cubic root of 130072640 is about 506.6740380583.

The spelling of 130072640 in words is "one hundred thirty million, seventy-two thousand, six hundred forty".