622153220 has 144 divisors (see below), whose sum is σ = 1514080512. Its totient is φ = 214156800.

The previous prime is 622153177. The next prime is 622153237. The reversal of 622153220 is 22351226.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 4120145 + ... + 4120295.

It is an arithmetic number, because the mean of its divisors is an integer number (10514448).

Almost surely, 2^622153220 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 622153220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (757040256).

622153220 is an abundant number, since it is smaller than the sum of its proper divisors (891927292).

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

622153220 is a wasteful number, since it uses less digits than its factorization.

622153220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 622153220 is about 24942.9994186746. Note that the first 3 decimals coincide. The cubic root of 622153220 is about 853.6878840126.

The spelling of 622153220 in words is "six hundred twenty-two million, one hundred fifty-three thousand, two hundred twenty".