129472910 has 32 divisors (see below), whose sum is σ = 268996032. Its totient is φ = 43948800.

The previous prime is 129472909. The next prime is 129472913. The reversal of 129472910 is 19274921.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129472913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2087 + ... + 16226.

It is an arithmetic number, because the mean of its divisors is an integer number (8406126).

Almost surely, 2^129472910 is an apocalyptic number.

129472910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129472910 is an abundant number, since it is smaller than the sum of its proper divisors (139523122).

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

129472910 is a wasteful number, since it uses less digits than its factorization.

129472910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18428.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 129472910 is about 11378.6163482209. The cubic root of 129472910 is about 505.8941255466.

The spelling of 129472910 in words is "one hundred twenty-nine million, four hundred seventy-two thousand, nine hundred ten".