22220346 has 16 divisors (see below), whose sum is σ = 46373184. Its totient is φ = 7084704.

The previous prime is 22220339. The next prime is 22220357. The reversal of 22220346 is 64302222.

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, 80371 + ... + 80646.

It is an arithmetic number, because the mean of its divisors is an integer number (2898324).

Almost surely, 2^22220346 is an apocalyptic number.

22220346 is an abundant number, since it is smaller than the sum of its proper divisors (24152838).

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

22220346 is a wasteful number, since it uses less digits than its factorization.

22220346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161045.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 22220346 is about 4713.8462002912. The cubic root of 22220346 is about 281.1363092090.

Adding to 22220346 its reverse (64302222), we get a palindrome (86522568).

The spelling of 22220346 in words is "twenty-two million, two hundred twenty thousand, three hundred forty-six".