222306406 has 16 divisors (see below), whose sum is σ = 382459680. Its totient is φ = 94933440.

The previous prime is 222306391. The next prime is 222306407. The reversal of 222306406 is 604603222.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222306407) 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, 24321 + ... + 32188.

It is an arithmetic number, because the mean of its divisors is an integer number (23903730).

Almost surely, 2^222306406 is an apocalyptic number.

222306406 is a deficient number, since it is larger than the sum of its proper divisors (160153274).

222306406 is a wasteful number, since it uses less digits than its factorization.

222306406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56799.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 222306406 is about 14909.9431923800. The cubic root of 222306406 is about 605.7833406592.

Adding to 222306406 its reverse (604603222), we get a palindrome (826909628).

The spelling of 222306406 in words is "two hundred twenty-two million, three hundred six thousand, four hundred six".