9090256 has 20 divisors (see below), whose sum is σ = 20128672. Its totient is φ = 3895776.

The previous prime is 9090251. The next prime is 9090259. The reversal of 9090256 is 6520909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9090251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40470 + ... + 40693.

Almost surely, 2^9090256 is an apocalyptic number.

It is an amenable number.

9090256 is an abundant number, since it is smaller than the sum of its proper divisors (11038416).

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

9090256 is a wasteful number, since it uses less digits than its factorization.

9090256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81178 (or 81172 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 9090256 is about 3015.0051409575. The cubic root of 9090256 is about 208.7014043000.

Subtracting from 9090256 its sum of digits (31), we obtain a square (9090225 = 3015²).

The spelling of 9090256 in words is "nine million, ninety thousand, two hundred fifty-six".