222420260 has 24 divisors (see below), whose sum is σ = 471621696. Its totient is φ = 88103520.

The previous prime is 222420259. The next prime is 222420287. The reversal of 222420260 is 62024222.

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

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, 51926 + ... + 56045.

It is an arithmetic number, because the mean of its divisors is an integer number (19650904).

Almost surely, 2^222420260 is an apocalyptic number.

222420260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222420260 is an abundant number, since it is smaller than the sum of its proper divisors (249201436).

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

222420260 is a wasteful number, since it uses less digits than its factorization.

222420260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108083 (or 108081 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 222420260 is about 14913.7607597816. The cubic root of 222420260 is about 605.8867401167.

Adding to 222420260 its reverse (62024222), we get a palindrome (284444482).

The spelling of 222420260 in words is "two hundred twenty-two million, four hundred twenty thousand, two hundred sixty".