20852807 has 8 divisors (see below), whose sum is σ = 21457920. Its totient is φ = 20253240.

The previous prime is 20852803. The next prime is 20852809. The reversal of 20852807 is 70825802.

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

It is a cyclic number.

It is not a de Polignac number, because 20852807 - 2² = 20852803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20852803) 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, 6944 + ... + 9482.

It is an arithmetic number, because the mean of its divisors is an integer number (2682240).

Almost surely, 2^20852807 is an apocalyptic number.

20852807 is a deficient number, since it is larger than the sum of its proper divisors (605113).

20852807 is a wasteful number, since it uses less digits than its factorization.

20852807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2773.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 20852807 is about 4566.4873809089. The cubic root of 20852807 is about 275.2463115496.

The spelling of 20852807 in words is "twenty million, eight hundred fifty-two thousand, eight hundred seven".