91230902 has 16 divisors (see below), whose sum is σ = 156545952. Its totient is φ = 39061440.

The previous prime is 91230877. The next prime is 91230961. The reversal of 91230902 is 20903219.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16028 + ... + 20960.

It is an arithmetic number, because the mean of its divisors is an integer number (9784122).

Almost surely, 2^91230902 is an apocalyptic number.

91230902 is a deficient number, since it is larger than the sum of its proper divisors (65315050).

91230902 is a wasteful number, since it uses less digits than its factorization.

91230902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6263.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 91230902 is about 9551.4868999544. The cubic root of 91230902 is about 450.1742567924.

The spelling of 91230902 in words is "ninety-one million, two hundred thirty thousand, nine hundred two".