16938857 has 8 divisors (see below), whose sum is σ = 18326784. Its totient is φ = 15563088.

The previous prime is 16938839. The next prime is 16938881. The reversal of 16938857 is 75883961.

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 not a de Polignac number, because 16938857 - 2⁶ = 16938793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16938157) 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, 23 + ... + 5820.

It is an arithmetic number, because the mean of its divisors is an integer number (2290848).

Almost surely, 2^16938857 is an apocalyptic number.

It is an amenable number.

16938857 is a deficient number, since it is larger than the sum of its proper divisors (1387927).

16938857 is a wasteful number, since it uses less digits than its factorization.

16938857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6079.

The product of its digits is 362880, while the sum is 47.

The square root of 16938857 is about 4115.6842687456. The cubic root of 16938857 is about 256.8195223381.

The spelling of 16938857 in words is "sixteen million, nine hundred thirty-eight thousand, eight hundred fifty-seven".