90782818 has 32 divisors (see below), whose sum is σ = 166210560. Its totient is φ = 36348480.

The previous prime is 90782807. The next prime is 90782819. The reversal of 90782818 is 81828709.

It is a super-2 number, since 2×90782818² = 16483040088042248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90782819) 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 15 ways as a sum of consecutive naturals, for example, 8980 + ... + 16192.

It is an arithmetic number, because the mean of its divisors is an integer number (5194080).

Almost surely, 2^90782818 is an apocalyptic number.

90782818 is a deficient number, since it is larger than the sum of its proper divisors (75427742).

90782818 is a wasteful number, since it uses less digits than its factorization.

90782818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7282.

The product of its (nonzero) digits is 64512, while the sum is 43.

The square root of 90782818 is about 9528.0017842148. The cubic root of 90782818 is about 449.4360309414.

The spelling of 90782818 in words is "ninety million, seven hundred eighty-two thousand, eight hundred eighteen".