222400752 has 80 divisors (see below), whose sum is σ = 659933952. Its totient is φ = 63221760.

The previous prime is 222400751. The next prime is 222400781. The reversal of 222400752 is 257004222.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222400751) 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 15 ways as a sum of consecutive naturals, for example, 69328 + ... + 72464.

Almost surely, 2^222400752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222400752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329966976).

222400752 is an abundant number, since it is smaller than the sum of its proper divisors (437533200).

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

222400752 is a wasteful number, since it uses less digits than its factorization.

222400752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3366 (or 3360 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 222400752 is about 14913.1067185882. The cubic root of 222400752 is about 605.8690259269.

Adding to 222400752 its reverse (257004222), we get a palindrome (479404974).

The spelling of 222400752 in words is "two hundred twenty-two million, four hundred thousand, seven hundred fifty-two".