19894286 has 8 divisors (see below), whose sum is σ = 29936520. Its totient is φ = 9915448.

The previous prime is 19894283. The next prime is 19894289. The reversal of 19894286 is 68249891.

It is an interprime number because it is at equal distance from previous prime (19894283) and next prime (19894289).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 19894286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19894283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15056 + ... + 16323.

It is an arithmetic number, because the mean of its divisors is an integer number (3742065).

Almost surely, 2^19894286 is an apocalyptic number.

19894286 is a deficient number, since it is larger than the sum of its proper divisors (10042234).

19894286 is a wasteful number, since it uses less digits than its factorization.

19894286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31698.

The product of its digits is 248832, while the sum is 47.

The square root of 19894286 is about 4460.3011109117. The cubic root of 19894286 is about 270.9626633021.

The spelling of 19894286 in words is "nineteen million, eight hundred ninety-four thousand, two hundred eighty-six".