222401440 has 48 divisors (see below), whose sum is σ = 542384640. Its totient is φ = 86088960.

The previous prime is 222401437. The next prime is 222401449. The reversal of 222401440 is 44104222.

It is not an unprimeable number, because it can be changed into a prime (222401449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17460 + ... + 27379.

It is an arithmetic number, because the mean of its divisors is an integer number (11299680).

Almost surely, 2^222401440 is an apocalyptic number.

222401440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222401440 is an abundant number, since it is smaller than the sum of its proper divisors (319983200).

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

222401440 is a wasteful number, since it uses less digits than its factorization.

222401440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44885 (or 44877 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 222401440 is about 14913.1297855279. The cubic root of 222401440 is about 605.8696506812.

Adding to 222401440 its reverse (44104222), we get a palindrome (266505662).

The spelling of 222401440 in words is "two hundred twenty-two million, four hundred one thousand, four hundred forty".