19006720400 has 60 divisors (see below), whose sum is σ = 45695550000. Its totient is φ = 7597376640.

The previous prime is 19006720393. The next prime is 19006720417. The reversal of 19006720400 is 402760091.

It is a super-2 number, since 2×19006720400² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 583751 + ... + 615449.

It is an arithmetic number, because the mean of its divisors is an integer number (761592500).

Almost surely, 2^19006720400 is an apocalyptic number.

19006720400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19006720400 is an abundant number, since it is smaller than the sum of its proper divisors (26688829600).

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

19006720400 is a wasteful number, since it uses less digits than its factorization.

19006720400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33216 (or 33205 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The spelling of 19006720400 in words is "nineteen billion, six million, seven hundred twenty thousand, four hundred".