20052819 has 8 divisors (see below), whose sum is σ = 29707920. Its totient is φ = 13368528.

The previous prime is 20052811. The next prime is 20052821. The reversal of 20052819 is 91825002.

It is not a de Polignac number, because 20052819 - 2³ = 20052811 is a prime.

It is a super-2 number, since 2×20052819² = 804231099693522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 742697 = 20052819 / (2 + 0 + 0 + 5 + 2 + 8 + 1 + 9).

It is a junction number, because it is equal to n+sod(n) for n = 20052792 and 20052801.

It is not an unprimeable number, because it can be changed into a prime (20052811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371322 + ... + 371375.

It is an arithmetic number, because the mean of its divisors is an integer number (3713490).

Almost surely, 2^20052819 is an apocalyptic number.

20052819 is a deficient number, since it is larger than the sum of its proper divisors (9655101).

20052819 is an equidigital number, since it uses as much as digits as its factorization.

20052819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742706 (or 742700 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 20052819 is about 4478.0374049353. The cubic root of 20052819 is about 271.6805063186.

The spelling of 20052819 in words is "twenty million, fifty-two thousand, eight hundred nineteen".