20210853 has 32 divisors (see below), whose sum is σ = 30499840. Its totient is φ = 11819520.

The previous prime is 20210849. The next prime is 20210867. The reversal of 20210853 is 35801202.

It is not a de Polignac number, because 20210853 - 2² = 20210849 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88143 + ... + 88371.

It is an arithmetic number, because the mean of its divisors is an integer number (953120).

Almost surely, 2^20210853 is an apocalyptic number.

It is an amenable number.

20210853 is a deficient number, since it is larger than the sum of its proper divisors (10288987).

20210853 is a wasteful number, since it uses less digits than its factorization.

20210853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 20210853 is about 4495.6482291211. The cubic root of 20210853 is about 272.3923340901.

The spelling of 20210853 in words is "twenty million, two hundred ten thousand, eight hundred fifty-three".