130172740 has 24 divisors (see below), whose sum is σ = 289443672. Its totient is φ = 49006080.

The previous prime is 130172729. The next prime is 130172747. The reversal of 130172740 is 47271031.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 48776256 + 81396484 = 6984^2 + 9022^2 .

It is not an unprimeable number, because it can be changed into a prime (130172747) 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, 191091 + ... + 191770.

It is an arithmetic number, because the mean of its divisors is an integer number (12060153).

Almost surely, 2^130172740 is an apocalyptic number.

130172740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130172740 is an abundant number, since it is smaller than the sum of its proper divisors (159270932).

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

130172740 is a wasteful number, since it uses less digits than its factorization.

130172740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382887 (or 382885 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 130172740 is about 11409.3268863680. The cubic root of 130172740 is about 506.8039784424.

The spelling of 130172740 in words is "one hundred thirty million, one hundred seventy-two thousand, seven hundred forty".