920790 has 48 divisors (see below), whose sum is σ = 2581488. Its totient is φ = 226368.

The previous prime is 920789. The next prime is 920791. The reversal of 920790 is 97029.

920790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (920789) and next prime (920791).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920791) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 777 + ... + 1563.

It is an arithmetic number, because the mean of its divisors is an integer number (53781).

2⁹²⁰⁷⁹⁰ is an apocalyptic number.

920790 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 920790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1290744).

920790 is an abundant number, since it is smaller than the sum of its proper divisors (1660698).

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

920790 is a wasteful number, since it uses less digits than its factorization.

920790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 920790 is about 959.5780322621. The cubic root of 920790 is about 97.2867132506.

The spelling of 920790 in words is "nine hundred twenty thousand, seven hundred ninety".