89831628 has 18 divisors (see below), whose sum is σ = 227074484. Its totient is φ = 29943864.

The previous prime is 89831627. The next prime is 89831633. The reversal of 89831628 is 82613898.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (89831627) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1247626 + ... + 1247697.

Almost surely, 2^89831628 is an apocalyptic number.

It is an amenable number.

89831628 is an abundant number, since it is smaller than the sum of its proper divisors (137242856).

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

89831628 is a wasteful number, since it uses less digits than its factorization.

89831628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495333 (or 2495328 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 89831628 is about 9477.9548426863. The cubic root of 89831628 is about 447.8608398029.

The spelling of 89831628 in words is "eighty-nine million, eight hundred thirty-one thousand, six hundred twenty-eight".