89945928 has 96 divisors (see below), whose sum is σ = 250793400. Its totient is φ = 29113344.

The previous prime is 89945917. The next prime is 89945941. The reversal of 89945928 is 82954998.

It can be written as a sum of positive squares in 4 ways, for example, as 78535044 + 11410884 = 8862^2 + 3378^2 .

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, 572826 + ... + 572982.

Almost surely, 2^89945928 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 89945928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125396700).

89945928 is an abundant number, since it is smaller than the sum of its proper divisors (160847472).

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

89945928 is a wasteful number, since it uses less digits than its factorization.

89945928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 344 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 89945928 is about 9483.9827077025. The cubic root of 89945928 is about 448.0507090772.

The spelling of 89945928 in words is "eighty-nine million, nine hundred forty-five thousand, nine hundred twenty-eight".