19893268 has 6 divisors (see below), whose sum is σ = 34813226. Its totient is φ = 9946632.

The previous prime is 19893253. The next prime is 19893271. The reversal of 19893268 is 86239891.

It can be written as a sum of positive squares in only one way, i.e., 19518724 + 374544 = 4418^2 + 612^2 .

It is a super-2 number, since 2×19893268² = 791484223439648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2486655 + ... + 2486662.

Almost surely, 2^19893268 is an apocalyptic number.

It is an amenable number.

19893268 is a deficient number, since it is larger than the sum of its proper divisors (14919958).

19893268 is a wasteful number, since it uses less digits than its factorization.

19893268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4973321 (or 4973319 counting only the distinct ones).

The product of its digits is 186624, while the sum is 46.

The square root of 19893268 is about 4460.1869915958. The cubic root of 19893268 is about 270.9580414608.

The spelling of 19893268 in words is "nineteen million, eight hundred ninety-three thousand, two hundred sixty-eight".