222444340 has 12 divisors (see below), whose sum is σ = 467133156. Its totient is φ = 88977728.

The previous prime is 222444317. The next prime is 222444353. The reversal of 222444340 is 43444222.

It can be written as a sum of positive squares in 2 ways, for example, as 143376676 + 79067664 = 11974^2 + 8892^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5561089 + ... + 5561128.

It is an arithmetic number, because the mean of its divisors is an integer number (38927763).

Almost surely, 2^222444340 is an apocalyptic number.

222444340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222444340 is an abundant number, since it is smaller than the sum of its proper divisors (244688816).

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

222444340 is a wasteful number, since it uses less digits than its factorization.

222444340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11122226 (or 11122224 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 222444340 is about 14914.5680460414. The cubic root of 222444340 is about 605.9086044712.

Adding to 222444340 its reverse (43444222), we get a palindrome (265888562).

It can be divided in two parts, 222444 and 340, that added together give a square (222784 = 472²).

The spelling of 222444340 in words is "two hundred twenty-two million, four hundred forty-four thousand, three hundred forty".