90224928 has 144 divisors (see below), whose sum is σ = 273532896. Its totient is φ = 29237760.

The previous prime is 90224909. The next prime is 90224951. The reversal of 90224928 is 82942209.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 90224892 and 90224901.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 318675 + ... + 318957.

It is an arithmetic number, because the mean of its divisors is an integer number (1899534).

Almost surely, 2^90224928 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 90224928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136766448).

90224928 is an abundant number, since it is smaller than the sum of its proper divisors (183307968).

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

90224928 is a wasteful number, since it uses less digits than its factorization.

90224928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 90224928 is about 9498.6803293931. The cubic root of 90224928 is about 448.5134949687.

The spelling of 90224928 in words is "ninety million, two hundred twenty-four thousand, nine hundred twenty-eight".