90781074 has 40 divisors (see below), whose sum is σ = 204006000. Its totient is φ = 30172824.

The previous prime is 90781063. The next prime is 90781087. The reversal of 90781074 is 47018709.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 80277 + ... + 81399.

It is an arithmetic number, because the mean of its divisors is an integer number (5100150).

Almost surely, 2^90781074 is an apocalyptic number.

90781074 is an abundant number, since it is smaller than the sum of its proper divisors (113224926).

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

90781074 is a wasteful number, since it uses less digits than its factorization.

90781074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636 (or 1627 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 90781074 is about 9527.9102640611. The cubic root of 90781074 is about 449.4331529318.

The spelling of 90781074 in words is "ninety million, seven hundred eighty-one thousand, seventy-four".