19442768 has 10 divisors (see below), whose sum is σ = 37670394. Its totient is φ = 9721376.

The previous prime is 19442767. The next prime is 19442779. The reversal of 19442768 is 86724491.

It can be written as a sum of positive squares in only one way, i.e., 11102224 + 8340544 = 3332^2 + 2888^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19442767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607571 + ... + 607602.

Almost surely, 2^19442768 is an apocalyptic number.

It is an amenable number.

19442768 is a deficient number, since it is larger than the sum of its proper divisors (18227626).

19442768 is a wasteful number, since it uses less digits than its factorization.

19442768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215181 (or 1215175 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 19442768 is about 4409.3954234112. The cubic root of 19442768 is about 268.8970460482.

The spelling of 19442768 in words is "nineteen million, four hundred forty-two thousand, seven hundred sixty-eight".