90480402 has 20 divisors (see below), whose sum is σ = 202743486. Its totient is φ = 30160080.

The previous prime is 90480391. The next prime is 90480407. The reversal of 90480402 is 20408409.

It can be written as a sum of positive squares in only one way, i.e., 89132481 + 1347921 = 9441^2 + 1161^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (90480407) 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 in 9 ways as a sum of consecutive naturals, for example, 279099 + ... + 279422.

Almost surely, 2^90480402 is an apocalyptic number.

90480402 is an abundant number, since it is smaller than the sum of its proper divisors (112263084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90480402 is a wasteful number, since it uses less digits than its factorization.

90480402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558535 (or 558526 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 90480402 is about 9512.1186914378. The cubic root of 90480402 is about 448.9364215379.

The spelling of 90480402 in words is "ninety million, four hundred eighty thousand, four hundred two".