19678996 has 12 divisors (see below), whose sum is σ = 36464148. Its totient is φ = 9260672.

The previous prime is 19678991. The next prime is 19679071. The reversal of 19678996 is 69987691.

It can be written as a sum of positive squares in 2 ways, for example, as 15210000 + 4468996 = 3900^2 + 2114^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19678991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144631 + ... + 144766.

It is an arithmetic number, because the mean of its divisors is an integer number (3038679).

Almost surely, 2^19678996 is an apocalyptic number.

It is an amenable number.

19678996 is a deficient number, since it is larger than the sum of its proper divisors (16785152).

19678996 is a wasteful number, since it uses less digits than its factorization.

19678996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289418 (or 289416 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 55.

The square root of 19678996 is about 4436.1014415813. The cubic root of 19678996 is about 269.9816905737.

The spelling of 19678996 in words is "nineteen million, six hundred seventy-eight thousand, nine hundred ninety-six".