16226693 has 18 divisors (see below), whose sum is σ = 19445778. Its totient is φ = 13500480.

The previous prime is 16226681. The next prime is 16226701. The reversal of 16226693 is 39662261.

It can be written as a sum of positive squares in 3 ways, for example, as 362404 + 15864289 = 602^2 + 3983^2 .

It is not a de Polignac number, because 16226693 - 2⁴ = 16226677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16226393) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 82271 + ... + 82467.

It is an arithmetic number, because the mean of its divisors is an integer number (1080321).

Almost surely, 2^16226693 is an apocalyptic number.

It is an amenable number.

16226693 is a deficient number, since it is larger than the sum of its proper divisors (3219085).

16226693 is an equidigital number, since it uses as much as digits as its factorization.

16226693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 245 counting only the distinct ones).

The product of its digits is 23328, while the sum is 35.

The square root of 16226693 is about 4028.2369592664. The cubic root of 16226693 is about 253.1686970845.

The spelling of 16226693 in words is "sixteen million, two hundred twenty-six thousand, six hundred ninety-three".