16223857 has 8 divisors (see below), whose sum is σ = 17878784. Its totient is φ = 14627088.

The previous prime is 16223843. The next prime is 16223861. The reversal of 16223857 is 75832261.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16223857 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (16223807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13953 + ... + 15070.

It is an arithmetic number, because the mean of its divisors is an integer number (2234848).

Almost surely, 2^16223857 is an apocalyptic number.

It is an amenable number.

16223857 is a deficient number, since it is larger than the sum of its proper divisors (1654927).

16223857 is a wasteful number, since it uses less digits than its factorization.

16223857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29079.

The product of its digits is 20160, while the sum is 34.

The square root of 16223857 is about 4027.8849288429. The cubic root of 16223857 is about 253.1539471442.

The spelling of 16223857 in words is "sixteen million, two hundred twenty-three thousand, eight hundred fifty-seven".