928720 has 80 divisors (see below), whose sum is σ = 2499840. Its totient is φ = 317952.

The previous prime is 928703. The next prime is 928769. The reversal of 928720 is 27829.

928720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19737 + ... + 19783.

It is an arithmetic number, because the mean of its divisors is an integer number (31248).

2⁹²⁸⁷²⁰ 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 928720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1249920).

928720 is an abundant number, since it is smaller than the sum of its proper divisors (1571120).

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

928720 is a wasteful number, since it uses less digits than its factorization.

928720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 928720 is about 963.7011985050. The cubic root of 928720 is about 97.5651985570.

The spelling of 928720 in words is "nine hundred twenty-eight thousand, seven hundred twenty".