19273420800 has 312 divisors, whose sum is σ = 70813488480. Its totient is φ = 5138841600.

The previous prime is 19273420783. The next prime is 19273420807. The reversal of 19273420800 is 802437291.

19273420800 is a `hidden beast` number, since 1 + 92 + 73 + 420 + 80 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (19273420807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2761315 + ... + 2768285.

Almost surely, 2^19273420800 is an apocalyptic number.

19273420800 is a gapful number since it is divisible by the number (10) 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 19273420800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35406744240).

19273420800 is an abundant number, since it is smaller than the sum of its proper divisors (51540067680).

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

19273420800 is an equidigital number, since it uses as much as digits as its factorization.

19273420800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7014 (or 6981 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 19273420800 in words is "nineteen billion, two hundred seventy-three million, four hundred twenty thousand, eight hundred".