90225402 has 8 divisors (see below), whose sum is σ = 180450816. Its totient is φ = 30075132.

The previous prime is 90225391. The next prime is 90225403. The reversal of 90225402 is 20452209.

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

90225402 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (90225403) 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, 7518778 + ... + 7518789.

It is an arithmetic number, because the mean of its divisors is an integer number (22556352).

Almost surely, 2^90225402 is an apocalyptic number.

90225402 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.

90225402 is a wasteful number, since it uses less digits than its factorization.

90225402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15037572.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 90225402 is about 9498.7052801948. The cubic root of 90225402 is about 448.5142803948.

The spelling of 90225402 in words is "ninety million, two hundred twenty-five thousand, four hundred two".