16907994 has 32 divisors (see below), whose sum is σ = 37722240. Its totient is φ = 5613696.

The previous prime is 16907977. The next prime is 16907999. The reversal of 16907994 is 49970961.

It is a super-2 number, since 2×16907994² = 571760522208072, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16907999) 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, 18619 + ... + 19505.

It is an arithmetic number, because the mean of its divisors is an integer number (1178820).

Almost surely, 2^16907994 is an apocalyptic number.

16907994 is an abundant number, since it is smaller than the sum of its proper divisors (20814246).

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

16907994 is a wasteful number, since it uses less digits than its factorization.

16907994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251 (or 1245 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 16907994 is about 4111.9331220242. The cubic root of 16907994 is about 256.6634504198.

The spelling of 16907994 in words is "sixteen million, nine hundred seven thousand, nine hundred ninety-four".