90181322 has 16 divisors (see below), whose sum is σ = 168651072. Its totient is φ = 35135520.

The previous prime is 90181319. The next prime is 90181331. The reversal of 90181322 is 22318109.

It is a junction number, because it is equal to n+sod(n) for n = 90181291 and 90181300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292643 + ... + 292950.

It is an arithmetic number, because the mean of its divisors is an integer number (10540692).

Almost surely, 2^90181322 is an apocalyptic number.

90181322 is a deficient number, since it is larger than the sum of its proper divisors (78469750).

90181322 is a wasteful number, since it uses less digits than its factorization.

90181322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585613.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 90181322 is about 9496.3846804982. The cubic root of 90181322 is about 448.4412273167.

The spelling of 90181322 in words is "ninety million, one hundred eighty-one thousand, three hundred twenty-two".