130733640 has 48 divisors (see below), whose sum is σ = 424885500. Its totient is φ = 34862208.

The previous prime is 130733639. The next prime is 130733641. The reversal of 130733640 is 46337031.

It is a happy number.

130733640 is a `hidden beast` number, since 13 + 0 + 7 + 3 + 3 + 640 = 666.

It is an interprime number because it is at equal distance from previous prime (130733639) and next prime (130733641).

It can be written as a sum of positive squares in 2 ways, for example, as 130096836 + 636804 = 11406^2 + 798^2 .

It is not an unprimeable number, because it can be changed into a prime (130733641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181215 + ... + 181934.

Almost surely, 2^130733640 is an apocalyptic number.

130733640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130733640 is an abundant number, since it is smaller than the sum of its proper divisors (294151860).

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

130733640 is a wasteful number, since it uses less digits than its factorization.

130733640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363166 (or 363159 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 27.

The square root of 130733640 is about 11433.8812307982. The cubic root of 130733640 is about 507.5308562698.

The spelling of 130733640 in words is "one hundred thirty million, seven hundred thirty-three thousand, six hundred forty".