19974104928 has 60 divisors (see below), whose sum is σ = 58743295380. Its totient is φ = 6658034112.

The previous prime is 19974104869. The next prime is 19974104929. The reversal of 19974104928 is 82940147991.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19974104929) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3850438 + ... + 3855621.

It is an arithmetic number, because the mean of its divisors is an integer number (979054923).

Almost surely, 2^19974104928 is an apocalyptic number.

19974104928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19974104928 is an abundant number, since it is smaller than the sum of its proper divisors (38769190452).

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

19974104928 is an equidigital number, since it uses as much as digits as its factorization.

19974104928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7706081 (or 7706064 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The spelling of 19974104928 in words is "nineteen billion, nine hundred seventy-four million, one hundred four thousand, nine hundred twenty-eight".