222400140 has 24 divisors (see below), whose sum is σ = 622720560. Its totient is φ = 59306688.

The previous prime is 222400127. The next prime is 222400151. The reversal of 222400140 is 41004222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1853275 + ... + 1853394.

It is an arithmetic number, because the mean of its divisors is an integer number (25946690).

Almost surely, 2^222400140 is an apocalyptic number.

222400140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222400140 is an abundant number, since it is smaller than the sum of its proper divisors (400320420).

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

222400140 is a wasteful number, since it uses less digits than its factorization.

222400140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3706681 (or 3706679 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 222400140 is about 14913.0861997106. The cubic root of 222400140 is about 605.8684701851.

Adding to 222400140 its reverse (41004222), we get a palindrome (263404362).

The spelling of 222400140 in words is "two hundred twenty-two million, four hundred thousand, one hundred forty".