920780 has 24 divisors (see below), whose sum is σ = 2210208. Its totient is φ = 315648.

The previous prime is 920761. The next prime is 920783. The reversal of 920780 is 87029.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (920783) by changing a digit.

920780 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3149 + ... + 3428.

It is an arithmetic number, because the mean of its divisors is an integer number (92092).

2⁹²⁰⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

920780 is an abundant number, since it is smaller than the sum of its proper divisors (1289428).

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

920780 is a wasteful number, since it uses less digits than its factorization.

920780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6593 (or 6591 counting only the distinct ones).

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

The square root of 920780 is about 959.5728216243. The cubic root of 920780 is about 97.2863610637.

The spelling of 920780 in words is "nine hundred twenty thousand, seven hundred eighty".