222466440 has 256 divisors, whose sum is σ = 821145600. Its totient is φ = 47084544.

The previous prime is 222466429. The next prime is 222466441. The reversal of 222466440 is 44664222.

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 = 222466398 and 222466407.

It is not an unprimeable number, because it can be changed into a prime (222466441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 845749 + ... + 846011.

It is an arithmetic number, because the mean of its divisors is an integer number (3207600).

Almost surely, 2^222466440 is an apocalyptic number.

222466440 is a gapful number since it is divisible by the number (20) 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 222466440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (410572800).

222466440 is an abundant number, since it is smaller than the sum of its proper divisors (598679160).

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

222466440 is a wasteful number, since it uses less digits than its factorization.

222466440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 222466440 is about 14915.3089139984. The cubic root of 222466440 is about 605.9286696206.

The spelling of 222466440 in words is "two hundred twenty-two million, four hundred sixty-six thousand, four hundred forty".