90367640 has 48 divisors (see below), whose sum is σ = 223503840. Its totient is φ = 32859200.

The previous prime is 90367619. The next prime is 90367679. The reversal of 90367640 is 4676309.

It is a self number, because there is not a number n which added to its sum of digits gives 90367640.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 4496 + ... + 14175.

It is an arithmetic number, because the mean of its divisors is an integer number (4656330).

Almost surely, 2^90367640 is an apocalyptic number.

It is an amenable number.

90367640 is an abundant number, since it is smaller than the sum of its proper divisors (133136200).

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

90367640 is a wasteful number, since it uses less digits than its factorization.

90367640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18704 (or 18689 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 90367640 is about 9506.1895625955. The cubic root of 90367640 is about 448.7498470164.

The spelling of 90367640 in words is "ninety million, three hundred sixty-seven thousand, six hundred forty".