20853716 has 24 divisors (see below), whose sum is σ = 41371680. Its totient is φ = 9117792.

The previous prime is 20853673. The next prime is 20853719. The reversal of 20853716 is 61735802.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20853719) 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, 9566 + ... + 11541.

It is an arithmetic number, because the mean of its divisors is an integer number (1723820).

Almost surely, 2^20853716 is an apocalyptic number.

20853716 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20853716 is a deficient number, since it is larger than the sum of its proper divisors (20517964).

20853716 is a wasteful number, since it uses less digits than its factorization.

20853716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21143 (or 21141 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 20853716 is about 4566.5869092792. The cubic root of 20853716 is about 275.2503109354.

The spelling of 20853716 in words is "twenty million, eight hundred fifty-three thousand, seven hundred sixteen".