20852719 has 4 divisors (see below), whose sum is σ = 21416344. Its totient is φ = 20289096.

The previous prime is 20852707. The next prime is 20852773. The reversal of 20852719 is 91725802.

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

It is a cyclic number.

It is not a de Polignac number, because 20852719 - 2⁵ = 20852687 is a prime.

It is a super-2 number, since 2×20852719² = 869671779385922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20852779) 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, 281757 + ... + 281830.

It is an arithmetic number, because the mean of its divisors is an integer number (5354086).

Almost surely, 2^20852719 is an apocalyptic number.

20852719 is a deficient number, since it is larger than the sum of its proper divisors (563625).

20852719 is an equidigital number, since it uses as much as digits as its factorization.

20852719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563624.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 20852719 is about 4566.4777454839. The cubic root of 20852719 is about 275.2459243642.

The spelling of 20852719 in words is "twenty million, eight hundred fifty-two thousand, seven hundred nineteen".