130640632 has 16 divisors (see below), whose sum is σ = 249103800. Its totient is φ = 64212960.

The previous prime is 130640617. The next prime is 130640651. The reversal of 130640632 is 236046031.

It is a junction number, because it is equal to n+sod(n) for n = 130640597 and 130640606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137919 + ... + 138862.

Almost surely, 2^130640632 is an apocalyptic number.

It is an amenable number.

130640632 is a deficient number, since it is larger than the sum of its proper divisors (118463168).

130640632 is a wasteful number, since it uses less digits than its factorization.

130640632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276846 (or 276842 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 130640632 is about 11429.8132968129. The cubic root of 130640632 is about 507.4104699419.

Adding to 130640632 its reverse (236046031), we get a palindrome (366686663).

The spelling of 130640632 in words is "one hundred thirty million, six hundred forty thousand, six hundred thirty-two".