922820 has 12 divisors (see below), whose sum is σ = 1937964. Its totient is φ = 369120.

The previous prime is 922813. The next prime is 922853. The reversal of 922820 is 28229.

It can be written as a sum of positive squares in 2 ways, for example, as 179776 + 743044 = 424^2 + 862^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

922820 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 3 ways as a sum of consecutive naturals, for example, 23051 + ... + 23090.

It is an arithmetic number, because the mean of its divisors is an integer number (161497).

2⁹²²⁸²⁰ is an apocalyptic number.

It is an amenable number.

922820 is an abundant number, since it is smaller than the sum of its proper divisors (1015144).

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

922820 is a wasteful number, since it uses less digits than its factorization.

922820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46150 (or 46148 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 922820 is about 960.6352065170. The cubic root of 922820 is about 97.3581544671.

The spelling of 922820 in words is "nine hundred twenty-two thousand, eight hundred twenty".