129232490 has 64 divisors (see below), whose sum is σ = 260029440. Its totient is φ = 46033920.

The previous prime is 129232489. The next prime is 129232507. The reversal of 129232490 is 94232921.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217634 + ... + 218226.

It is an arithmetic number, because the mean of its divisors is an integer number (4062960).

Almost surely, 2^129232490 is an apocalyptic number.

129232490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129232490 is an abundant number, since it is smaller than the sum of its proper divisors (130796950).

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

129232490 is a wasteful number, since it uses less digits than its factorization.

129232490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 129232490 is about 11368.0468858991. The cubic root of 129232490 is about 505.5807976412.

The spelling of 129232490 in words is "one hundred twenty-nine million, two hundred thirty-two thousand, four hundred ninety".