16398938 has 16 divisors (see below), whose sum is σ = 26730240. Its totient is φ = 7516800.

The previous prime is 16398887. The next prime is 16398947. The reversal of 16398938 is 83989361.

It is a junction number, because it is equal to n+sod(n) for n = 16398892 and 16398901.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5783 + ... + 8138.

It is an arithmetic number, because the mean of its divisors is an integer number (1670640).

Almost surely, 2^16398938 is an apocalyptic number.

16398938 is a deficient number, since it is larger than the sum of its proper divisors (10331302).

16398938 is a wasteful number, since it uses less digits than its factorization.

16398938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13973.

The product of its digits is 279936, while the sum is 47.

The square root of 16398938 is about 4049.5602230366. The cubic root of 16398938 is about 254.0613343109.

The spelling of 16398938 in words is "sixteen million, three hundred ninety-eight thousand, nine hundred thirty-eight".