222179144 has 32 divisors (see below), whose sum is σ = 457950240. Its totient is φ = 100214400.

The previous prime is 222179143. The next prime is 222179147. The reversal of 222179144 is 441971222.

It is a happy number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 222179144.

It is not an unprimeable number, because it can be changed into a prime (222179143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1892 + ... + 21164.

It is an arithmetic number, because the mean of its divisors is an integer number (14310945).

Almost surely, 2^222179144 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 222179144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228975120).

222179144 is an abundant number, since it is smaller than the sum of its proper divisors (235771096).

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

222179144 is a wasteful number, since it uses less digits than its factorization.

222179144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19421 (or 19417 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 222179144 is about 14905.6748924696. The cubic root of 222179144 is about 605.6677225857.

The spelling of 222179144 in words is "two hundred twenty-two million, one hundred seventy-nine thousand, one hundred forty-four".