20675853 has 24 divisors (see below), whose sum is σ = 33636096. Its totient is φ = 12124800.

The previous prime is 20675813. The next prime is 20675917. The reversal of 20675853 is 35857602.

It is not a de Polignac number, because 20675853 - 2⁶ = 20675789 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20675813) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 300 + ... + 6437.

It is an arithmetic number, because the mean of its divisors is an integer number (1401504).

Almost surely, 2^20675853 is an apocalyptic number.

It is an amenable number.

20675853 is a deficient number, since it is larger than the sum of its proper divisors (12960243).

20675853 is a wasteful number, since it uses less digits than its factorization.

20675853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6785 (or 6782 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 20675853 is about 4547.0708153711. The cubic root of 20675853 is about 274.4655316192.

It can be divided in two parts, 20675 and 853, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 20675853 in words is "twenty million, six hundred seventy-five thousand, eight hundred fifty-three".