19642814 has 8 divisors (see below), whose sum is σ = 29491128. Its totient is φ = 9812440.

The previous prime is 19642801. The next prime is 19642823. The reversal of 19642814 is 41824691.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1292 + ... + 6399.

It is an arithmetic number, because the mean of its divisors is an integer number (3686391).

Almost surely, 2^19642814 is an apocalyptic number.

19642814 is a deficient number, since it is larger than the sum of its proper divisors (9848314).

19642814 is a wasteful number, since it uses less digits than its factorization.

19642814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8970.

The product of its digits is 13824, while the sum is 35.

The square root of 19642814 is about 4432.0214349662. The cubic root of 19642814 is about 269.8161253782.

The spelling of 19642814 in words is "nineteen million, six hundred forty-two thousand, eight hundred fourteen".