19782214 has 8 divisors (see below), whose sum is σ = 29837808. Its totient is φ = 9836280.

The previous prime is 19782199. The next prime is 19782223. The reversal of 19782214 is 41228791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 19782214.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 26962 + ... + 27685.

It is an arithmetic number, because the mean of its divisors is an integer number (3729726).

Almost surely, 2^19782214 is an apocalyptic number.

19782214 is a deficient number, since it is larger than the sum of its proper divisors (10055594).

19782214 is a wasteful number, since it uses less digits than its factorization.

19782214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54830.

The product of its digits is 8064, while the sum is 34.

The square root of 19782214 is about 4447.7200901136. The cubic root of 19782214 is about 270.4528933064.

Multiplying 19782214 by its sum of digits (34), we get a palindrome (672595276).

The spelling of 19782214 in words is "nineteen million, seven hundred eighty-two thousand, two hundred fourteen".