19794080 has 48 divisors (see below), whose sum is σ = 47079144. Its totient is φ = 7864320.

The previous prime is 19794059. The next prime is 19794083. The reversal of 19794080 is 8049791.

It can be written as a sum of positive squares in 4 ways, for example, as 17272336 + 2521744 = 4156^2 + 1588^2 .

It is not an unprimeable number, because it can be changed into a prime (19794083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30560 + ... + 31200.

Almost surely, 2^19794080 is an apocalyptic number.

19794080 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 19794080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23539572).

19794080 is an abundant number, since it is smaller than the sum of its proper divisors (27285064).

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

19794080 is a wasteful number, since it uses less digits than its factorization.

19794080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849 (or 841 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 19794080 is about 4449.0538319962. The cubic root of 19794080 is about 270.5069579085.

The spelling of 19794080 in words is "nineteen million, seven hundred ninety-four thousand, eighty".