222445740 has 48 divisors (see below), whose sum is σ = 679472640. Its totient is φ = 53926080.

The previous prime is 222445721. The next prime is 222445757. The reversal of 222445740 is 47544222.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 222445698 and 222445707.

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, 167860 + ... + 169179.

It is an arithmetic number, because the mean of its divisors is an integer number (14155680).

Almost surely, 2^222445740 is an apocalyptic number.

222445740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222445740 is an abundant number, since it is smaller than the sum of its proper divisors (457026900).

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

222445740 is a wasteful number, since it uses less digits than its factorization.

222445740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337062 (or 337060 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 30.

The square root of 222445740 is about 14914.6149799450. The cubic root of 222445740 is about 605.9098756061.

Adding to 222445740 its reverse (47544222), we get a palindrome (269989962).

The spelling of 222445740 in words is "two hundred twenty-two million, four hundred forty-five thousand, seven hundred forty".