222724326 has 16 divisors (see below), whose sum is σ = 485944128. Its totient is φ = 67492200.

The previous prime is 222724309. The next prime is 222724357. The reversal of 222724326 is 623427222.

It is a happy number.

It is a super-2 number, since 2×222724326² = 99212250784308552, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222724293 and 222724302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1687240 + ... + 1687371.

It is an arithmetic number, because the mean of its divisors is an integer number (30371508).

Almost surely, 2^222724326 is an apocalyptic number.

222724326 is an abundant number, since it is smaller than the sum of its proper divisors (263219802).

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

222724326 is a wasteful number, since it uses less digits than its factorization.

222724326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374627.

The product of its digits is 16128, while the sum is 30.

The square root of 222724326 is about 14923.9514204516. The cubic root of 222724326 is about 606.1627126819.

The spelling of 222724326 in words is "two hundred twenty-two million, seven hundred twenty-four thousand, three hundred twenty-six".