90190722 has 8 divisors (see below), whose sum is σ = 180381456. Its totient is φ = 30063572.

The previous prime is 90190717. The next prime is 90190733. The reversal of 90190722 is 22709109.

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

90190722 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 90190722.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7515888 + ... + 7515899.

It is an arithmetic number, because the mean of its divisors is an integer number (22547682).

Almost surely, 2^90190722 is an apocalyptic number.

90190722 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.

90190722 is a wasteful number, since it uses less digits than its factorization.

90190722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15031792.

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

The square root of 90190722 is about 9496.8795927926. The cubic root of 90190722 is about 448.4568077828.

The spelling of 90190722 in words is "ninety million, one hundred ninety thousand, seven hundred twenty-two".