19680836 has 12 divisors (see below), whose sum is σ = 39361728. Its totient is φ = 8434632.

The previous prime is 19680823. The next prime is 19680841. The reversal of 19680836 is 63808691.

It is a happy number.

19680836 is an admirable number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 19680793 and 19680802.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351416 + ... + 351471.

It is an arithmetic number, because the mean of its divisors is an integer number (3280144).

Almost surely, 2^19680836 is an apocalyptic number.

It is an amenable number.

19680836 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19680836 is a wasteful number, since it uses less digits than its factorization.

19680836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702898 (or 702896 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 19680836 is about 4436.3088260400. The cubic root of 19680836 is about 269.9901048043.

The spelling of 19680836 in words is "nineteen million, six hundred eighty thousand, eight hundred thirty-six".