16226407 has 4 divisors (see below), whose sum is σ = 16234816. Its totient is φ = 16218000.

The previous prime is 16226401. The next prime is 16226429. The reversal of 16226407 is 70462261.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 70462261 = 5693 ⋅12377.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16226407 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 (16226401) 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, 298 + ... + 5704.

It is an arithmetic number, because the mean of its divisors is an integer number (4058704).

Almost surely, 2^16226407 is an apocalyptic number.

16226407 is a deficient number, since it is larger than the sum of its proper divisors (8409).

16226407 is an equidigital number, since it uses as much as digits as its factorization.

16226407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8408.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 16226407 is about 4028.2014597088. The cubic root of 16226407 is about 253.1672096861.

Adding to 16226407 its reverse (70462261), we get a palindrome (86688668).

It can be divided in two parts, 162 and 26407, that added together give a square (26569 = 163²).

The spelling of 16226407 in words is "sixteen million, two hundred twenty-six thousand, four hundred seven".