622501220 has 48 divisors (see below), whose sum is σ = 1429094016. Its totient is φ = 225888000.

The previous prime is 622501169. The next prime is 622501247. The reversal of 622501220 is 22105226.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 622501192 and 622501201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111905 + ... + 117335.

It is an arithmetic number, because the mean of its divisors is an integer number (29772792).

Almost surely, 2^622501220 is an apocalyptic number.

It is an amenable number.

622501220 is an abundant number, since it is smaller than the sum of its proper divisors (806592796).

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

622501220 is a wasteful number, since it uses less digits than its factorization.

622501220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5972 (or 5970 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 622501220 is about 24949.9743486842. The cubic root of 622501220 is about 853.8470238088.

Adding to 622501220 its reverse (22105226), we get a palindrome (644606446).

The spelling of 622501220 in words is "six hundred twenty-two million, five hundred one thousand, two hundred twenty".