20853427 has 8 divisors (see below), whose sum is σ = 23938400. Its totient is φ = 17794944.

The previous prime is 20853419. The next prime is 20853439. The reversal of 20853427 is 72435802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20853427 - 2³ = 20853419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20853227) 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, 4902 + ... + 8107.

It is an arithmetic number, because the mean of its divisors is an integer number (2992300).

Almost surely, 2^20853427 is an apocalyptic number.

20853427 is a deficient number, since it is larger than the sum of its proper divisors (3084973).

20853427 is a wasteful number, since it uses less digits than its factorization.

20853427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13245.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 20853427 is about 4566.5552662811. Note that the first 3 decimals coincide. The cubic root of 20853427 is about 275.2490394161.

It can be divided in two parts, 208 and 53427, that added together give a palindrome (53635).

The spelling of 20853427 in words is "twenty million, eight hundred fifty-three thousand, four hundred twenty-seven".