20726853 has 48 divisors (see below), whose sum is σ = 34856640. Its totient is φ = 10886400.

The previous prime is 20726837. The next prime is 20726897. The reversal of 20726853 is 35862702.

It is not a de Polignac number, because 20726853 - 2⁴ = 20726837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20726803) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 114423 + ... + 114603.

It is an arithmetic number, because the mean of its divisors is an integer number (726180).

Almost surely, 2^20726853 is an apocalyptic number.

It is an amenable number.

20726853 is a deficient number, since it is larger than the sum of its proper divisors (14129787).

20726853 is a wasteful number, since it uses less digits than its factorization.

20726853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 20726853 is about 4552.6753672978. The cubic root of 20726853 is about 274.6910160478.

The spelling of 20726853 in words is "twenty million, seven hundred twenty-six thousand, eight hundred fifty-three".