90266840 has 32 divisors (see below), whose sum is σ = 204331680. Its totient is φ = 35887872.

The previous prime is 90266833. The next prime is 90266851. The reversal of 90266840 is 4866209.

It is a self number, because there is not a number n which added to its sum of digits gives 90266840.

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 7 ways as a sum of consecutive naturals, for example, 77 + ... + 13436.

It is an arithmetic number, because the mean of its divisors is an integer number (6385365).

Almost surely, 2^90266840 is an apocalyptic number.

It is an amenable number.

90266840 is an abundant number, since it is smaller than the sum of its proper divisors (114064840).

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

90266840 is a wasteful number, since it uses less digits than its factorization.

90266840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13691 (or 13687 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 90266840 is about 9500.8862744483. The cubic root of 90266840 is about 448.5829332345.

The spelling of 90266840 in words is "ninety million, two hundred sixty-six thousand, eight hundred forty".