90421600 has 36 divisors (see below), whose sum is σ = 220743684. Its totient is φ = 36168320.

The previous prime is 90421559. The next prime is 90421601. The reversal of 90421600 is 612409.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90421601) 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 5 ways as a sum of consecutive naturals, for example, 55714 + ... + 57313.

It is an arithmetic number, because the mean of its divisors is an integer number (6131769).

Almost surely, 2^90421600 is an apocalyptic number.

It is an amenable number.

90421600 is an abundant number, since it is smaller than the sum of its proper divisors (130322084).

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

90421600 is a wasteful number, since it uses less digits than its factorization.

90421600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113047 (or 113034 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 90421600 is about 9509.0272898967. The cubic root of 90421600 is about 448.8391478757.

The spelling of 90421600 in words is "ninety million, four hundred twenty-one thousand, six hundred".