20852928 has 84 divisors (see below), whose sum is σ = 61298328. Its totient is φ = 6773760.

The previous prime is 20852921. The next prime is 20852929. The reversal of 20852928 is 82925802.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 20852892 and 20852901.

It is not an unprimeable number, because it can be changed into a prime (20852921) 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, 23175 + ... + 24057.

It is an arithmetic number, because the mean of its divisors is an integer number (729742).

Almost surely, 2^20852928 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 20852928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30649164).

20852928 is an abundant number, since it is smaller than the sum of its proper divisors (40445400).

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

20852928 is a wasteful number, since it uses less digits than its factorization.

20852928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942 (or 929 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 20852928 is about 4566.5006295850. The cubic root of 20852928 is about 275.2468439278.

The spelling of 20852928 in words is "twenty million, eight hundred fifty-two thousand, nine hundred twenty-eight".