16226387 has 4 divisors (see below), whose sum is σ = 16664976. Its totient is φ = 15787800.

The previous prime is 16226369. The next prime is 16226393. The reversal of 16226387 is 78362261.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16226387 - 2⁸ = 16226131 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a zygodrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (16226317) 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, 219239 + ... + 219312.

It is an arithmetic number, because the mean of its divisors is an integer number (4166244).

Almost surely, 2^16226387 is an apocalyptic number.

16226387 is a deficient number, since it is larger than the sum of its proper divisors (438589).

16226387 is an equidigital number, since it uses as much as digits as its factorization.

16226387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438588.

The product of its digits is 24192, while the sum is 35.

The square root of 16226387 is about 4028.1989772105. The cubic root of 16226387 is about 253.1671056715.

The spelling of 16226387 in words is "sixteen million, two hundred twenty-six thousand, three hundred eighty-seven".