90493280 has 24 divisors (see below), whose sum is σ = 213790752. Its totient is φ = 36197248.

The previous prime is 90493267. The next prime is 90493307. The reversal of 90493280 is 8239409.

It is a self number, because there is not a number n which added to its sum of digits gives 90493280.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282632 + ... + 282951.

It is an arithmetic number, because the mean of its divisors is an integer number (8907948).

Almost surely, 2^90493280 is an apocalyptic number.

It is an amenable number.

90493280 is an abundant number, since it is smaller than the sum of its proper divisors (123297472).

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

90493280 is a wasteful number, since it uses less digits than its factorization.

90493280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565598 (or 565590 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 90493280 is about 9512.7955933048. The cubic root of 90493280 is about 448.9577194427.

The spelling of 90493280 in words is "ninety million, four hundred ninety-three thousand, two hundred eighty".