91790022 has 8 divisors (see below), whose sum is σ = 183580056. Its totient is φ = 30596672.

The previous prime is 91790009. The next prime is 91790029. The reversal of 91790022 is 22009719.

It is a sphenic number, since it is the product of 3 distinct primes.

91790022 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91790029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7649163 + ... + 7649174.

It is an arithmetic number, because the mean of its divisors is an integer number (22947507).

Almost surely, 2^91790022 is an apocalyptic number.

91790022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

91790022 is a wasteful number, since it uses less digits than its factorization.

91790022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15298342.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 91790022 is about 9580.7109339547. The cubic root of 91790022 is about 451.0920341901.

The spelling of 91790022 in words is "ninety-one million, seven hundred ninety thousand, twenty-two".