20852804 has 36 divisors (see below), whose sum is σ = 44037504. Its totient is φ = 8462448.

The previous prime is 20852803. The next prime is 20852809. The reversal of 20852804 is 40825802.

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 11 ways as a sum of consecutive naturals, for example, 9077 + ... + 11139.

It is an arithmetic number, because the mean of its divisors is an integer number (1223264).

Almost surely, 2^20852804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20852804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22018752).

20852804 is an abundant number, since it is smaller than the sum of its proper divisors (23184700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20852804 is a wasteful number, since it uses less digits than its factorization.

20852804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112 (or 2091 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 20852804 is about 4566.4870524288. The cubic root of 20852804 is about 275.2462983501.

The spelling of 20852804 in words is "twenty million, eight hundred fifty-two thousand, eight hundred four".