19380216 has 16 divisors (see below), whose sum is σ = 48450600. Its totient is φ = 6460064.

The previous prime is 19380199. The next prime is 19380217. The reversal of 19380216 is 61208391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19380217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403731 + ... + 403778.

Almost surely, 2^19380216 is an apocalyptic number.

It is an amenable number.

19380216 is an abundant number, since it is smaller than the sum of its proper divisors (29070384).

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

19380216 is a wasteful number, since it uses less digits than its factorization.

19380216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807518 (or 807514 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 19380216 is about 4402.2966733286. The cubic root of 19380216 is about 268.6083677015.

The spelling of 19380216 in words is "nineteen million, three hundred eighty thousand, two hundred sixteen".