222232464 has 80 divisors (see below), whose sum is σ = 653499840. Its totient is φ = 72264960.

The previous prime is 222232447. The next prime is 222232469. The reversal of 222232464 is 464232222.

It is a happy number.

It is a super-2 number, since 2×222232464² = 98774536111022592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (222232469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11439 + ... + 23985.

It is an arithmetic number, because the mean of its divisors is an integer number (8168748).

Almost surely, 2^222232464 is an apocalyptic number.

222232464 is a gapful number since it is divisible by the number (24) 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 222232464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326749920).

222232464 is an abundant number, since it is smaller than the sum of its proper divisors (431267376).

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

222232464 is a wasteful number, since it uses less digits than its factorization.

222232464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12605 (or 12593 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 222232464 is about 14907.4633657105. The cubic root of 222232464 is about 605.7161694071.

Adding to 222232464 its reverse (464232222), we get a palindrome (686464686).

The spelling of 222232464 in words is "two hundred twenty-two million, two hundred thirty-two thousand, four hundred sixty-four".