16220136 has 16 divisors (see below), whose sum is σ = 40550400. Its totient is φ = 5406704.

The previous prime is 16220111. The next prime is 16220137. The reversal of 16220136 is 63102261.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (16220137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337896 + ... + 337943.

It is an arithmetic number, because the mean of its divisors is an integer number (2534400).

Almost surely, 2^16220136 is an apocalyptic number.

It is an amenable number.

16220136 is an abundant number, since it is smaller than the sum of its proper divisors (24330264).

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

16220136 is a wasteful number, since it uses less digits than its factorization.

16220136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675848 (or 675844 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 16220136 is about 4027.4229974017. The cubic root of 16220136 is about 253.1345917414.

Adding to 16220136 its reverse (63102261), we get a palindrome (79322397).

The spelling of 16220136 in words is "sixteen million, two hundred twenty thousand, one hundred thirty-six".