20853300 has 72 divisors (see below), whose sum is σ = 64988896. Its totient is φ = 5132160.

The previous prime is 20853299. The next prime is 20853319. The reversal of 20853300 is 335802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1227 + ... + 6573.

Almost surely, 2^20853300 is an apocalyptic number.

20853300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20853300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32494448).

20853300 is an abundant number, since it is smaller than the sum of its proper divisors (44135596).

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

20853300 is a wasteful number, since it uses less digits than its factorization.

20853300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5377 (or 5370 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 20853300 is about 4566.5413608113. The cubic root of 20853300 is about 275.2484806479.

The spelling of 20853300 in words is "twenty million, eight hundred fifty-three thousand, three hundred".