16938817 has 16 divisors (see below), whose sum is σ = 20666880. Its totient is φ = 13552128.

The previous prime is 16938809. The next prime is 16938821. The reversal of 16938817 is 71883961.

It is not a de Polignac number, because 16938817 - 2³ = 16938809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16938917) 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, 15784 + ... + 16822.

It is an arithmetic number, because the mean of its divisors is an integer number (1291680).

Almost surely, 2^16938817 is an apocalyptic number.

16938817 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16938817 is a deficient number, since it is larger than the sum of its proper divisors (3728063).

16938817 is a wasteful number, since it uses less digits than its factorization.

16938817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200.

The product of its digits is 72576, while the sum is 43.

The square root of 16938817 is about 4115.6794092835. The cubic root of 16938817 is about 256.8193201838.

The spelling of 16938817 in words is "sixteen million, nine hundred thirty-eight thousand, eight hundred seventeen".