129730452 has 24 divisors (see below), whose sum is σ = 302937600. Its totient is φ = 43210176.

The previous prime is 129730421. The next prime is 129730453. The reversal of 129730452 is 254037921.

It is a super-2 number, since 2×129730452² = 33659980352248608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129730453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15949 + ... + 22667.

It is an arithmetic number, because the mean of its divisors is an integer number (12622400).

Almost surely, 2^129730452 is an apocalyptic number.

129730452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129730452 is an abundant number, since it is smaller than the sum of its proper divisors (173207148).

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

129730452 is a wasteful number, since it uses less digits than its factorization.

129730452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8335 (or 8333 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 129730452 is about 11389.9276556087. The cubic root of 129730452 is about 506.2293377331.

The spelling of 129730452 in words is "one hundred twenty-nine million, seven hundred thirty thousand, four hundred fifty-two".