90683280 has 80 divisors (see below), whose sum is σ = 312360960. Its totient is φ = 24181632.

The previous prime is 90683279. The next prime is 90683297. The reversal of 90683280 is 8238609.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18832 + ... + 23151.

It is an arithmetic number, because the mean of its divisors is an integer number (3904512).

Almost surely, 2^90683280 is an apocalyptic number.

90683280 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

90683280 is an abundant number, since it is smaller than the sum of its proper divisors (221677680).

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

90683280 is a wasteful number, since it uses less digits than its factorization.

90683280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42005 (or 41993 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 90683280 is about 9522.7769059240. The cubic root of 90683280 is about 449.2717108468.

The spelling of 90683280 in words is "ninety million, six hundred eighty-three thousand, two hundred eighty".