90722856 has 128 divisors (see below), whose sum is σ = 276203520. Its totient is φ = 24271104.

The previous prime is 90722843. The next prime is 90722857. The reversal of 90722856 is 65822709.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (90722857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204571 + ... + 205013.

It is an arithmetic number, because the mean of its divisors is an integer number (2157840).

Almost surely, 2^90722856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90722856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138101760).

90722856 is an abundant number, since it is smaller than the sum of its proper divisors (185480664).

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

90722856 is a wasteful number, since it uses less digits than its factorization.

90722856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 90722856 is about 9524.8546445602. The cubic root of 90722856 is about 449.3370583996.

The spelling of 90722856 in words is "ninety million, seven hundred twenty-two thousand, eight hundred fifty-six".