19827642 has 8 divisors (see below), whose sum is σ = 39655296. Its totient is φ = 6609212.

The previous prime is 19827637. The next prime is 19827649. The reversal of 19827642 is 24672891.

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

19827642 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 19827642.

It is not an unprimeable number, because it can be changed into a prime (19827649) 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, 1652298 + ... + 1652309.

It is an arithmetic number, because the mean of its divisors is an integer number (4956912).

Almost surely, 2^19827642 is an apocalyptic number.

19827642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19827642 is a wasteful number, since it uses less digits than its factorization.

19827642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3304612.

The product of its digits is 48384, while the sum is 39.

The square root of 19827642 is about 4452.8240477252. The cubic root of 19827642 is about 270.6597582772.

The spelling of 19827642 in words is "nineteen million, eight hundred twenty-seven thousand, six hundred forty-two".