19642368 has 96 divisors (see below), whose sum is σ = 55036800. Its totient is φ = 6217728.

The previous prime is 19642349. The next prime is 19642387. The reversal of 19642368 is 86324691.

It is an interprime number because it is at equal distance from previous prime (19642349) and next prime (19642387).

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141243 + ... + 141381.

It is an arithmetic number, because the mean of its divisors is an integer number (573300).

Almost surely, 2^19642368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19642368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27518400).

19642368 is an abundant number, since it is smaller than the sum of its proper divisors (35394432).

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

19642368 is a wasteful number, since it uses less digits than its factorization.

19642368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 167 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 19642368 is about 4431.9711190395. The cubic root of 19642368 is about 269.8140832590.

The spelling of 19642368 in words is "nineteen million, six hundred forty-two thousand, three hundred sixty-eight".