16226413 has 4 divisors (see below), whose sum is σ = 18544480. Its totient is φ = 13908348.

The previous prime is 16226401. The next prime is 16226429. The reversal of 16226413 is 31462261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31462261 = 1999 ⋅15739.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16226413 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 (16226473) 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, 1159023 + ... + 1159036.

It is an arithmetic number, because the mean of its divisors is an integer number (4636120).

Almost surely, 2^16226413 is an apocalyptic number.

It is an amenable number.

16226413 is a deficient number, since it is larger than the sum of its proper divisors (2318067).

16226413 is an equidigital number, since it uses as much as digits as its factorization.

16226413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2318066.

The product of its digits is 1728, while the sum is 25.

The square root of 16226413 is about 4028.2022044580. The cubic root of 16226413 is about 253.1672408904.

Adding to 16226413 its reverse (31462261), we get a palindrome (47688674).

The spelling of 16226413 in words is "sixteen million, two hundred twenty-six thousand, four hundred thirteen".