90324218 has 4 divisors (see below), whose sum is σ = 135486330. Its totient is φ = 45162108.

The previous prime is 90324211. The next prime is 90324251. The reversal of 90324218 is 81242309.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 61669609 + 28654609 = 7853^2 + 5353^2 .

It is not an unprimeable number, because it can be changed into a prime (90324211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22581053 + ... + 22581056.

Almost surely, 2^90324218 is an apocalyptic number.

90324218 is a deficient number, since it is larger than the sum of its proper divisors (45162112).

90324218 is a wasteful number, since it uses less digits than its factorization.

90324218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45162111.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 90324218 is about 9503.9054077784. The cubic root of 90324218 is about 448.6779601564.

The spelling of 90324218 in words is "ninety million, three hundred twenty-four thousand, two hundred eighteen".