19680694 has 32 divisors (see below), whose sum is σ = 34214400. Its totient is φ = 8396640.

The previous prime is 19680667. The next prime is 19680719. The reversal of 19680694 is 49608691.

It is a self number, because there is not a number n which added to its sum of digits gives 19680694.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82227 + ... + 82465.

It is an arithmetic number, because the mean of its divisors is an integer number (1069200).

Almost surely, 2^19680694 is an apocalyptic number.

19680694 is a deficient number, since it is larger than the sum of its proper divisors (14533706).

19680694 is a wasteful number, since it uses less digits than its factorization.

19680694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 19680694 is about 4436.2928217150. The cubic root of 19680694 is about 269.9894554638.

The spelling of 19680694 in words is "nineteen million, six hundred eighty thousand, six hundred ninety-four".