89720 has 16 divisors (see below), whose sum is σ = 201960. Its totient is φ = 35872.

The previous prime is 89689. The next prime is 89753. The reversal of 89720 is 2798.

It is a self number, because there is not a number n which added to its sum of digits gives 89720.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 89720.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1082 + ... + 1161.

2⁸⁹⁷²⁰ is an apocalyptic number.

It is an amenable number.

89720 is an abundant number, since it is smaller than the sum of its proper divisors (112240).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100980).

89720 is a wasteful number, since it uses less digits than its factorization.

89720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2254 (or 2250 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 89720 is about 299.5329698047. The cubic root of 89720 is about 44.7675253600.

The spelling of 89720 in words is "eighty-nine thousand, seven hundred twenty".