20219793 has 16 divisors (see below), whose sum is σ = 29568000. Its totient is φ = 12188880.

The previous prime is 20219791. The next prime is 20219803. The reversal of 20219793 is 39791202.

It is not a de Polignac number, because 20219793 - 2¹ = 20219791 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20219791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5028 + ... + 8106.

It is an arithmetic number, because the mean of its divisors is an integer number (1848000).

Almost surely, 2^20219793 is an apocalyptic number.

It is an amenable number.

20219793 is a deficient number, since it is larger than the sum of its proper divisors (9348207).

20219793 is a wasteful number, since it uses less digits than its factorization.

20219793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3292.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 20219793 is about 4496.6424140685. The cubic root of 20219793 is about 272.4324912027.

It can be divided in two parts, 20219 and 793, that added together give a palindrome (21012).

The spelling of 20219793 in words is "twenty million, two hundred nineteen thousand, seven hundred ninety-three".