20819362 has 4 divisors (see below), whose sum is σ = 31229046. Its totient is φ = 10409680.

The previous prime is 20819341. The next prime is 20819363. The reversal of 20819362 is 26391802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20802721 + 16641 = 4561^2 + 129^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (20819363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5204839 + ... + 5204842.

Almost surely, 2^20819362 is an apocalyptic number.

20819362 is a deficient number, since it is larger than the sum of its proper divisors (10409684).

20819362 is a wasteful number, since it uses less digits than its factorization.

20819362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10409683.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 20819362 is about 4562.8239063107. The cubic root of 20819362 is about 275.0990805511.

The spelling of 20819362 in words is "twenty million, eight hundred nineteen thousand, three hundred sixty-two".