90278922 has 8 divisors (see below), whose sum is σ = 180557856. Its totient is φ = 30092972.

The previous prime is 90278921. The next prime is 90278941. The reversal of 90278922 is 22987209.

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

90278922 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (90278921) 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, 7523238 + ... + 7523249.

It is an arithmetic number, because the mean of its divisors is an integer number (22569732).

Almost surely, 2^90278922 is an apocalyptic number.

90278922 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.

90278922 is a wasteful number, since it uses less digits than its factorization.

90278922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15046492.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 90278922 is about 9501.5220885919. The cubic root of 90278922 is about 448.6029462582.

The spelling of 90278922 in words is "ninety million, two hundred seventy-eight thousand, nine hundred twenty-two".