130433720 has 32 divisors (see below), whose sum is σ = 295131600. Its totient is φ = 51879168.

The previous prime is 130433717. The next prime is 130433729. The reversal of 130433720 is 27334031.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130433729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1949 + ... + 16268.

Almost surely, 2^130433720 is an apocalyptic number.

130433720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130433720 is an abundant number, since it is smaller than the sum of its proper divisors (164697880).

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

130433720 is a wasteful number, since it uses less digits than its factorization.

130433720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18407 (or 18403 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 130433720 is about 11420.7582935635. The cubic root of 130433720 is about 507.1424451305.

Adding to 130433720 its reverse (27334031), we get a palindrome (157767751).

The spelling of 130433720 in words is "one hundred thirty million, four hundred thirty-three thousand, seven hundred twenty".