19874223 has 12 divisors (see below), whose sum is σ = 28835560. Its totient is φ = 13190256.

The previous prime is 19874219. The next prime is 19874237. The reversal of 19874223 is 32247891.

It is not a de Polignac number, because 19874223 - 2² = 19874219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19874203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2761 + ... + 6882.

Almost surely, 2^19874223 is an apocalyptic number.

19874223 is a deficient number, since it is larger than the sum of its proper divisors (8961337).

19874223 is a wasteful number, since it uses less digits than its factorization.

19874223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9878 (or 9875 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 19874223 is about 4458.0514801873. The cubic root of 19874223 is about 270.8715458088.

It can be divided in two parts, 198742 and 23, that added together give a triangular number (198765 = T₆₃₀).

The spelling of 19874223 in words is "nineteen million, eight hundred seventy-four thousand, two hundred twenty-three".