129808146 has 32 divisors (see below), whose sum is σ = 280038528. Its totient is φ = 39876480.

The previous prime is 129808087. The next prime is 129808153. The reversal of 129808146 is 641808921.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74566 + ... + 76286.

It is an arithmetic number, because the mean of its divisors is an integer number (8751204).

Almost surely, 2^129808146 is an apocalyptic number.

129808146 is an abundant number, since it is smaller than the sum of its proper divisors (150230382).

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

129808146 is a wasteful number, since it uses less digits than its factorization.

129808146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 129808146 is about 11393.3377901298. The cubic root of 129808146 is about 506.3303757766.

The spelling of 129808146 in words is "one hundred twenty-nine million, eight hundred eight thousand, one hundred forty-six".