222620424 has 64 divisors (see below), whose sum is σ = 618723840. Its totient is φ = 66286080.

The previous prime is 222620413. The next prime is 222620449. The reversal of 222620424 is 424026222.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 222620394 and 222620403.

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, 1837 + ... + 21180.

It is an arithmetic number, because the mean of its divisors is an integer number (9667560).

Almost surely, 2^222620424 is an apocalyptic number.

222620424 is a gapful number since it is divisible by the number (24) 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 222620424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309361920).

222620424 is an abundant number, since it is smaller than the sum of its proper divisors (396103416).

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

222620424 is a wasteful number, since it uses less digits than its factorization.

222620424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23070 (or 23066 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 222620424 is about 14920.4699657886. The cubic root of 222620424 is about 606.0684387192.

Adding to 222620424 its reverse (424026222), we get a palindrome (646646646).

The spelling of 222620424 in words is "two hundred twenty-two million, six hundred twenty thousand, four hundred twenty-four".