19713330 has 192 divisors, whose sum is σ = 66044160. Its totient is φ = 3967488.

The previous prime is 19713299. The next prime is 19713347. The reversal of 19713330 is 3331791.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19713294 and 19713303.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 237469 + ... + 237551.

It is an arithmetic number, because the mean of its divisors is an integer number (343980).

Almost surely, 2^19713330 is an apocalyptic number.

19713330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19713330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33022080).

19713330 is an abundant number, since it is smaller than the sum of its proper divisors (46330830).

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

19713330 is a wasteful number, since it uses less digits than its factorization.

19713330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 1701, while the sum is 27.

The square root of 19713330 is about 4439.9695944905. The cubic root of 19713330 is about 270.1386119551.

The spelling of 19713330 in words is "nineteen million, seven hundred thirteen thousand, three hundred thirty".