90129710 has 32 divisors (see below), whose sum is σ = 182697984. Its totient is φ = 31716000.

The previous prime is 90129707. The next prime is 90129731. The reversal of 90129710 is 1792109.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 9806 + ... + 16625.

It is an arithmetic number, because the mean of its divisors is an integer number (5709312).

Almost surely, 2^90129710 is an apocalyptic number.

90129710 is an abundant number, since it is smaller than the sum of its proper divisors (92568274).

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

90129710 is a wasteful number, since it uses less digits than its factorization.

90129710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26480.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 90129710 is about 9493.6668363704. Note that the first 3 decimals coincide. The cubic root of 90129710 is about 448.3556613151.

The spelling of 90129710 in words is "ninety million, one hundred twenty-nine thousand, seven hundred ten".