20819338 has 8 divisors (see below), whose sum is σ = 31421088. Its totient is φ = 10345644.

The previous prime is 20819333. The next prime is 20819341. The reversal of 20819338 is 83391802.

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

It is not an unprimeable number, because it can be changed into a prime (20819333) 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, 31606 + ... + 32257.

It is an arithmetic number, because the mean of its divisors is an integer number (3927636).

Almost surely, 2^20819338 is an apocalyptic number.

20819338 is a deficient number, since it is larger than the sum of its proper divisors (10601750).

20819338 is a wasteful number, since it uses less digits than its factorization.

20819338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64028.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 20819338 is about 4562.8212763596. The cubic root of 20819338 is about 275.0989748422.

The spelling of 20819338 in words is "twenty million, eight hundred nineteen thousand, three hundred thirty-eight".