90256320 has 504 divisors, whose sum is σ = 400519392. Its totient is φ = 18247680.

The previous prime is 90256307. The next prime is 90256321. The reversal of 90256320 is 2365209.

90256320 is a `hidden beast` number, since 9 + 0 + 25 + 632 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (504).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90256321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2439342 + ... + 2439378.

Almost surely, 2^90256320 is an apocalyptic number.

90256320 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90256320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200259696).

90256320 is an abundant number, since it is smaller than the sum of its proper divisors (310263072).

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

90256320 is a wasteful number, since it uses less digits than its factorization.

90256320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 90256320 is about 9500.3326257558. The cubic root of 90256320 is about 448.5655061048.

The spelling of 90256320 in words is "ninety million, two hundred fifty-six thousand, three hundred twenty".