16971894 has 12 divisors (see below), whose sum is σ = 36772476. Its totient is φ = 5657292.

The previous prime is 16971893. The next prime is 16971919. The reversal of 16971894 is 49817961.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16971893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 471424 + ... + 471459.

It is an arithmetic number, because the mean of its divisors is an integer number (3064373).

Almost surely, 2^16971894 is an apocalyptic number.

16971894 is an abundant number, since it is smaller than the sum of its proper divisors (19800582).

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

16971894 is a wasteful number, since it uses less digits than its factorization.

16971894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942891 (or 942888 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 16971894 is about 4119.6958625607. The cubic root of 16971894 is about 256.9863780776.

The spelling of 16971894 in words is "sixteen million, nine hundred seventy-one thousand, eight hundred ninety-four".