16940394 has 16 divisors (see below), whose sum is σ = 37645440. Its totient is φ = 5646780.

The previous prime is 16940389. The next prime is 16940411. The reversal of 16940394 is 49304961.

16940394 is a `hidden beast` number, since 169 + 403 + 94 = 666.

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, 156802 + ... + 156909.

It is an arithmetic number, because the mean of its divisors is an integer number (2352840).

Almost surely, 2^16940394 is an apocalyptic number.

16940394 is an abundant number, since it is smaller than the sum of its proper divisors (20705046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16940394 is a wasteful number, since it uses less digits than its factorization.

16940394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313722 (or 313716 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 16940394 is about 4115.8709892318. The cubic root of 16940394 is about 256.8272898765.

The spelling of 16940394 in words is "sixteen million, nine hundred forty thousand, three hundred ninety-four".