16420222 has 32 divisors (see below), whose sum is σ = 30707712. Its totient is φ = 6411744.

The previous prime is 16420219. The next prime is 16420223. The reversal of 16420222 is 22202461.

It is a self number, because there is not a number n which added to its sum of digits gives 16420222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16420223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14563 + ... + 15649.

It is an arithmetic number, because the mean of its divisors is an integer number (959616).

Almost surely, 2^16420222 is an apocalyptic number.

16420222 is a deficient number, since it is larger than the sum of its proper divisors (14287490).

16420222 is a wasteful number, since it uses less digits than its factorization.

16420222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 16420222 is about 4052.1873105768. The cubic root of 16420222 is about 254.1712012569.

Adding to 16420222 its reverse (22202461), we get a palindrome (38622683).

The spelling of 16420222 in words is "sixteen million, four hundred twenty thousand, two hundred twenty-two".