16719642 has 16 divisors (see below), whose sum is σ = 37154880. Its totient is φ = 5573196.

The previous prime is 16719623. The next prime is 16719667. The reversal of 16719642 is 24691761.

16719642 is a `hidden beast` number, since 1 + 6 + 7 + 1 + 9 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 16719597 and 16719606.

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, 154758 + ... + 154865.

It is an arithmetic number, because the mean of its divisors is an integer number (2322180).

Almost surely, 2^16719642 is an apocalyptic number.

16719642 is an abundant number, since it is smaller than the sum of its proper divisors (20435238).

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

16719642 is a wasteful number, since it uses less digits than its factorization.

16719642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309634 (or 309628 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 16719642 is about 4088.9658839369. The cubic root of 16719642 is about 255.7068278792.

The spelling of 16719642 in words is "sixteen million, seven hundred nineteen thousand, six hundred forty-two".