90978282 has 32 divisors (see below), whose sum is σ = 206880960. Its totient is φ = 29620080.

The previous prime is 90978281. The next prime is 90978299. The reversal of 90978282 is 28287909.

It is not an unprimeable number, because it can be changed into a prime (90978281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17269 + ... + 21912.

It is an arithmetic number, because the mean of its divisors is an integer number (6465030).

Almost surely, 2^90978282 is an apocalyptic number.

90978282 is an abundant number, since it is smaller than the sum of its proper divisors (115902678).

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

90978282 is a wasteful number, since it uses less digits than its factorization.

90978282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39235 (or 39229 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 90978282 is about 9538.2536137387. The cubic root of 90978282 is about 449.7583591559.

The spelling of 90978282 in words is "ninety million, nine hundred seventy-eight thousand, two hundred eighty-two".