16226857 has 16 divisors (see below), whose sum is σ = 18192384. Its totient is φ = 14400000.

The previous prime is 16226809. The next prime is 16226869. The reversal of 16226857 is 75862261.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16226857 - 2⁷ = 16226729 is a prime.

It is a Duffinian number.

Its product of digits (40320) is a multiple of the sum of its prime divisors (840).

It is not an unprimeable number, because it can be changed into a prime (16226807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21232 + ... + 21982.

It is an arithmetic number, because the mean of its divisors is an integer number (1137024).

Almost surely, 2^16226857 is an apocalyptic number.

16226857 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16226857 is a deficient number, since it is larger than the sum of its proper divisors (1965527).

16226857 is a wasteful number, since it uses less digits than its factorization.

16226857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840.

The product of its digits is 40320, while the sum is 37.

The square root of 16226857 is about 4028.2573155150. The cubic root of 16226857 is about 253.1695499904.

The spelling of 16226857 in words is "sixteen million, two hundred twenty-six thousand, eight hundred fifty-seven".