222622020 has 84 divisors (see below), whose sum is σ = 700984620. Its totient is φ = 59361984.

The previous prime is 222621961. The next prime is 222622027. The reversal of 222622020 is 20226222.

222622020 is a `hidden beast` number, since 2 + 22 + 622 + 0 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 90326016 + 132296004 = 9504^2 + 11502^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 222621984 and 222622002.

It is not an unprimeable number, because it can be changed into a prime (222622027) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 6946 + ... + 22214.

It is an arithmetic number, because the mean of its divisors is an integer number (8345055).

Almost surely, 2^222622020 is an apocalyptic number.

222622020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222622020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350492310).

222622020 is an abundant number, since it is smaller than the sum of its proper divisors (478362600).

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

222622020 is a wasteful number, since it uses less digits than its factorization.

222622020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15296 (or 15279 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 222622020 is about 14920.5234492628. The cubic root of 222622020 is about 606.0698870483.

Adding to 222622020 its reverse (20226222), we get a palindrome (242848242).

The spelling of 222622020 in words is "two hundred twenty-two million, six hundred twenty-two thousand, twenty".