130640744 has 16 divisors (see below), whose sum is σ = 263794020. Its totient is φ = 60295680.

The previous prime is 130640729. The next prime is 130640749. The reversal of 130640744 is 447046031.

It can be written as a sum of positive squares in 2 ways, for example, as 115132900 + 15507844 = 10730^2 + 3938^2 .

It is not an unprimeable number, because it can be changed into a prime (130640749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 627977 + ... + 628184.

Almost surely, 2^130640744 is an apocalyptic number.

It is an amenable number.

130640744 is an abundant number, since it is smaller than the sum of its proper divisors (133153276).

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

130640744 is a wasteful number, since it uses less digits than its factorization.

130640744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256180 (or 1256176 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 130640744 is about 11429.8181962794. The cubic root of 130640744 is about 507.4106149452.

Adding to 130640744 its reverse (447046031), we get a palindrome (577686775).

The spelling of 130640744 in words is "one hundred thirty million, six hundred forty thousand, seven hundred forty-four".