20236169 has 4 divisors (see below), whose sum is σ = 20288580. Its totient is φ = 20183760.

The previous prime is 20236163. The next prime is 20236189. The reversal of 20236169 is 96163202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96163202 = 2 ⋅48081601.

It can be written as a sum of positive squares in 2 ways, for example, as 7182400 + 13053769 = 2680^2 + 3613^2 .

It is a cyclic number.

It is not a de Polignac number, because 20236169 - 2¹² = 20232073 is a prime.

It is a super-2 number, since 2×20236169² = 819005071593122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20236163) 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, 25622 + ... + 26399.

It is an arithmetic number, because the mean of its divisors is an integer number (5072145).

Almost surely, 2^20236169 is an apocalyptic number.

It is an amenable number.

20236169 is a deficient number, since it is larger than the sum of its proper divisors (52411).

20236169 is an equidigital number, since it uses as much as digits as its factorization.

20236169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52410.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 20236169 is about 4498.4629597230. The cubic root of 20236169 is about 272.5060190012.

It can be divided in two parts, 2023 and 6169, that added together give a 13-th power (8192 = 2¹³).

The spelling of 20236169 in words is "twenty million, two hundred thirty-six thousand, one hundred sixty-nine".