90288833 has 12 divisors (see below), whose sum is σ = 95328000. Its totient is φ = 85474440.

The previous prime is 90288787. The next prime is 90288841. The reversal of 90288833 is 33888209.

It is not a de Polignac number, because 90288833 - 2¹² = 90284737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90288883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44168 + ... + 46166.

It is an arithmetic number, because the mean of its divisors is an integer number (7944000).

Almost surely, 2^90288833 is an apocalyptic number.

It is an amenable number.

90288833 is a deficient number, since it is larger than the sum of its proper divisors (5039167).

90288833 is a wasteful number, since it uses less digits than its factorization.

90288833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108 (or 2077 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 90288833 is about 9502.0436222952. The cubic root of 90288833 is about 448.6193618327.

The spelling of 90288833 in words is "ninety million, two hundred eighty-eight thousand, eight hundred thirty-three".