90032256 has 128 divisors (see below), whose sum is σ = 269280000. Its totient is φ = 29611008.

The previous prime is 90032233. The next prime is 90032263. The reversal of 90032256 is 65223009.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 376585 + ... + 376823.

It is an arithmetic number, because the mean of its divisors is an integer number (2103750).

Almost surely, 2^90032256 is an apocalyptic number.

90032256 is a gapful number since it is divisible by the number (96) 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 90032256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134640000).

90032256 is an abundant number, since it is smaller than the sum of its proper divisors (179247744).

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

90032256 is a wasteful number, since it uses less digits than its factorization.

90032256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371 (or 353 counting only the distinct ones).

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

The square root of 90032256 is about 9488.5328686789. The cubic root of 90032256 is about 448.1940061097.

The spelling of 90032256 in words is "ninety million, thirty-two thousand, two hundred fifty-six".