19242864 has 30 divisors (see below), whose sum is σ = 53853696. Its totient is φ = 6414240.

The previous prime is 19242841. The next prime is 19242871. The reversal of 19242864 is 46824291.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66672 + ... + 66959.

Almost surely, 2^19242864 is an apocalyptic number.

It is an amenable number.

19242864 is an abundant number, since it is smaller than the sum of its proper divisors (34610832).

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

19242864 is a wasteful number, since it uses less digits than its factorization.

19242864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133645 (or 133636 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 19242864 is about 4386.6688956428. The cubic root of 19242864 is about 267.9722998028.

The spelling of 19242864 in words is "nineteen million, two hundred forty-two thousand, eight hundred sixty-four".