20229853 has 4 divisors (see below), whose sum is σ = 23119840. Its totient is φ = 17339868.

The previous prime is 20229841. The next prime is 20229863. The reversal of 20229853 is 35892202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20229853 - 2⁵ = 20229821 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 (20229863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1444983 + ... + 1444996.

It is an arithmetic number, because the mean of its divisors is an integer number (5779960).

Almost surely, 2^20229853 is an apocalyptic number.

It is an amenable number.

20229853 is a deficient number, since it is larger than the sum of its proper divisors (2889987).

20229853 is an equidigital number, since it uses as much as digits as its factorization.

20229853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2889986.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 20229853 is about 4497.7608873750. The cubic root of 20229853 is about 272.4776650325.

It can be divided in two parts, 202 and 29853, that multiplied together give a palindrome (6030306).

The spelling of 20229853 in words is "twenty million, two hundred twenty-nine thousand, eight hundred fifty-three".