19924079472 has 120 divisors (see below), whose sum is σ = 60924314880. Its totient is φ = 6028122240.

The previous prime is 19924079449. The next prime is 19924079473. The reversal of 19924079472 is 27497042991.

19924079472 is a `hidden beast` number, since 19 + 92 + 4 + 0 + 79 + 472 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19924079473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1034313 + ... + 1053399.

It is an arithmetic number, because the mean of its divisors is an integer number (507702624).

Almost surely, 2^19924079472 is an apocalyptic number.

19924079472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19924079472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30462157440).

19924079472 is an abundant number, since it is smaller than the sum of its proper divisors (41000235408).

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

19924079472 is a wasteful number, since it uses less digits than its factorization.

19924079472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19771 (or 19762 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 19924079472 in words is "nineteen billion, nine hundred twenty-four million, seventy-nine thousand, four hundred seventy-two".