422884 has 24 divisors (see below), whose sum is σ = 923328. Its totient is φ = 164640.

The previous prime is 422881. The next prime is 422893. The reversal of 422884 is 488224.

422884 = 21² + 22² + ... + 108².

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (422881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379 + ... + 994.

It is an arithmetic number, because the mean of its divisors is an integer number (38472).

2⁴²²⁸⁸⁴ is an apocalyptic number.

422884 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

422884 is an abundant number, since it is smaller than the sum of its proper divisors (500444).

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

422884 is a wasteful number, since it uses less digits than its factorization.

422884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395 (or 1393 counting only the distinct ones).

The product of its digits is 4096, while the sum is 28.

The square root of 422884 is about 650.2953175289. The cubic root of 422884 is about 75.0597449871.

It can be divided in two parts, 42 and 2884, that added together give a triangular number (2926 = T₇₆).

The spelling of 422884 in words is "four hundred twenty-two thousand, eight hundred eighty-four".