16220236 has 12 divisors (see below), whose sum is σ = 28417312. Its totient is φ = 8101008.

The previous prime is 16220233. The next prime is 16220249. The reversal of 16220236 is 63202261.

It is a happy number.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (16220233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3181 + ... + 6523.

Almost surely, 2^16220236 is an apocalyptic number.

It is an amenable number.

16220236 is a deficient number, since it is larger than the sum of its proper divisors (12197076).

16220236 is a wasteful number, since it uses less digits than its factorization.

16220236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4560 (or 4558 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 16220236 is about 4027.4354122692. The cubic root of 16220236 is about 253.1351119468.

Adding to 16220236 its reverse (63202261), we get a palindrome (79422497).

The spelling of 16220236 in words is "sixteen million, two hundred twenty thousand, two hundred thirty-six".