19842307428 has 24 divisors (see below), whose sum is σ = 46301558688. Its totient is φ = 6613696576.

The previous prime is 19842307417. The next prime is 19842307447. The reversal of 19842307428 is 82470324891.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204175 + ... + 285257.

It is an arithmetic number, because the mean of its divisors is an integer number (1929231612).

Almost surely, 2^19842307428 is an apocalyptic number.

It is an amenable number.

19842307428 is an abundant number, since it is smaller than the sum of its proper divisors (26459251260).

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

19842307428 is a wasteful number, since it uses less digits than its factorization.

19842307428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101483 (or 101481 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 19842307428 in words is "nineteen billion, eight hundred forty-two million, three hundred seven thousand, four hundred twenty-eight".