922428 has 72 divisors (see below), whose sum is σ = 2639728. Its totient is φ = 279936.

The previous prime is 922423. The next prime is 922451. The reversal of 922428 is 824229.

922428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 922428.

It is not an unprimeable number, because it can be changed into a prime (922423) by changing a digit.

922428 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 23 ways as a sum of consecutive naturals, for example, 12600 + ... + 12672.

2⁹²²⁴²⁸ 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 922428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1319864).

922428 is an abundant number, since it is smaller than the sum of its proper divisors (1717300).

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

922428 is a wasteful number, since it uses less digits than its factorization.

922428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 91 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 922428 is about 960.4311531807. The cubic root of 922428 is about 97.3443670901.

The spelling of 922428 in words is "nine hundred twenty-two thousand, four hundred twenty-eight".