622423144 has 32 divisors (see below), whose sum is σ = 1334995200. Its totient is φ = 266506560.

The previous prime is 622423127. The next prime is 622423157. The reversal of 622423144 is 441324226.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64422 + ... + 73450.

It is an arithmetic number, because the mean of its divisors is an integer number (41718600).

Almost surely, 2^622423144 is an apocalyptic number.

It is an amenable number.

622423144 is an abundant number, since it is smaller than the sum of its proper divisors (712572056).

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

622423144 is a wasteful number, since it uses less digits than its factorization.

622423144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10273 (or 10269 counting only the distinct ones).

The product of its digits is 9216, while the sum is 28.

The square root of 622423144 is about 24948.4096487131. The cubic root of 622423144 is about 853.8113249510.

The spelling of 622423144 in words is "six hundred twenty-two million, four hundred twenty-three thousand, one hundred forty-four".