16943906 has 24 divisors (see below), whose sum is σ = 30293676. Its totient is φ = 7082880.

The previous prime is 16943881. The next prime is 16943921. The reversal of 16943906 is 60934961.

It can be written as a sum of positive squares in 2 ways, for example, as 16883881 + 60025 = 4109^2 + 245^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16943906.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1910 + ... + 6126.

Almost surely, 2^16943906 is an apocalyptic number.

16943906 is a deficient number, since it is larger than the sum of its proper divisors (13349770).

16943906 is a wasteful number, since it uses less digits than its factorization.

16943906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4274 (or 4267 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 16943906 is about 4116.2976082883. The cubic root of 16943906 is about 256.8450367112.

The spelling of 16943906 in words is "sixteen million, nine hundred forty-three thousand, nine hundred six".