90508202 has 4 divisors (see below), whose sum is σ = 135762306. Its totient is φ = 45254100.

The previous prime is 90508199. The next prime is 90508207. The reversal of 90508202 is 20280509.

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., 85396081 + 5112121 = 9241^2 + 2261^2 .

It is not an unprimeable number, because it can be changed into a prime (90508207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22627049 + ... + 22627052.

Almost surely, 2^90508202 is an apocalyptic number.

90508202 is a deficient number, since it is larger than the sum of its proper divisors (45254104).

90508202 is a wasteful number, since it uses less digits than its factorization.

90508202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45254103.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 90508202 is about 9513.5798730026. The cubic root of 90508202 is about 448.9823952304.

The spelling of 90508202 in words is "ninety million, five hundred eight thousand, two hundred two".