19996316 has 12 divisors (see below), whose sum is σ = 35170800. Its totient is φ = 9947520.

The previous prime is 19996313. The next prime is 19996321. The reversal of 19996316 is 61369991.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19996313) 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, 11765 + ... + 13356.

It is an arithmetic number, because the mean of its divisors is an integer number (2930900).

Almost surely, 2^19996316 is an apocalyptic number.

It is an amenable number.

19996316 is a deficient number, since it is larger than the sum of its proper divisors (15174484).

19996316 is a wasteful number, since it uses less digits than its factorization.

19996316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25324 (or 25322 counting only the distinct ones).

The product of its digits is 78732, while the sum is 44.

The square root of 19996316 is about 4471.7240523091. The cubic root of 19996316 is about 271.4250941119.

It can be divided in two parts, 199 and 96316, that multiplied together give a square (19166884 = 4378²).

The spelling of 19996316 in words is "nineteen million, nine hundred ninety-six thousand, three hundred sixteen".