90728682 has 16 divisors (see below), whose sum is σ = 197953632. Its totient is φ = 27493520.

The previous prime is 90728681. The next prime is 90728731. The reversal of 90728682 is 28682709.

It is a happy number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (90728681) 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 7 ways as a sum of consecutive naturals, for example, 687273 + ... + 687404.

It is an arithmetic number, because the mean of its divisors is an integer number (12372102).

Almost surely, 2^90728682 is an apocalyptic number.

90728682 is an abundant number, since it is smaller than the sum of its proper divisors (107224950).

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

90728682 is a wasteful number, since it uses less digits than its factorization.

90728682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374693.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 90728682 is about 9525.1604710892. The cubic root of 90728682 is about 449.3466766361.

The spelling of 90728682 in words is "ninety million, seven hundred twenty-eight thousand, six hundred eighty-two".