129628902 has 32 divisors (see below), whose sum is σ = 282578688. Its totient is φ = 39403296.

The previous prime is 129628901. The next prime is 129628903. The reversal of 129628902 is 209826921.

It is an interprime number because it is at equal distance from previous prime (129628901) and next prime (129628903).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129628901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3538 + ... + 16485.

It is an arithmetic number, because the mean of its divisors is an integer number (8830584).

Almost surely, 2^129628902 is an apocalyptic number.

129628902 is an abundant number, since it is smaller than the sum of its proper divisors (152949786).

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

129628902 is a wasteful number, since it uses less digits than its factorization.

129628902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20124.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 129628902 is about 11385.4688968000. The cubic root of 129628902 is about 506.0972150437.

The spelling of 129628902 in words is "one hundred twenty-nine million, six hundred twenty-eight thousand, nine hundred two".