130406644 has 12 divisors (see below), whose sum is σ = 228520768. Its totient is φ = 65115000.

The previous prime is 130406641. The next prime is 130406663. The reversal of 130406644 is 446604031.

It is a happy number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130406641) 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, 18702 + ... + 24709.

Almost surely, 2^130406644 is an apocalyptic number.

It is an amenable number.

130406644 is a deficient number, since it is larger than the sum of its proper divisors (98114124).

130406644 is a wasteful number, since it uses less digits than its factorization.

130406644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44166 (or 44164 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 130406644 is about 11419.5728466524. The cubic root of 130406644 is about 507.1073510892.

The spelling of 130406644 in words is "one hundred thirty million, four hundred six thousand, six hundred forty-four".