19380912 has 80 divisors (see below), whose sum is σ = 53568000. Its totient is φ = 6020352.

The previous prime is 19380899. The next prime is 19380919. The reversal of 19380912 is 21908391.

It is not an unprimeable number, because it can be changed into a prime (19380919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71914 + ... + 72182.

It is an arithmetic number, because the mean of its divisors is an integer number (669600).

Almost surely, 2^19380912 is an apocalyptic number.

19380912 is a gapful number since it is divisible by the number (12) 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 19380912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26784000).

19380912 is an abundant number, since it is smaller than the sum of its proper divisors (34187088).

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

19380912 is a wasteful number, since it uses less digits than its factorization.

19380912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 19380912 is about 4402.3757222663. The cubic root of 19380912 is about 268.6115831660.

The spelling of 19380912 in words is "nineteen million, three hundred eighty thousand, nine hundred twelve".