20336869 has 4 divisors (see below), whose sum is σ = 23242144. Its totient is φ = 17431596.

The previous prime is 20336863. The next prime is 20336873. The reversal of 20336869 is 96863302.

It is a happy number.

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 20336869 - 2⁹ = 20336357 is a prime.

It is a super-2 number, since 2×20336869² = 827176481446322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20336863) 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, 1452627 + ... + 1452640.

It is an arithmetic number, because the mean of its divisors is an integer number (5810536).

Almost surely, 2^20336869 is an apocalyptic number.

It is an amenable number.

20336869 is a deficient number, since it is larger than the sum of its proper divisors (2905275).

20336869 is an equidigital number, since it uses as much as digits as its factorization.

20336869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2905274.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 20336869 is about 4509.6417817827. The cubic root of 20336869 is about 272.9572895834.

The spelling of 20336869 in words is "twenty million, three hundred thirty-six thousand, eight hundred sixty-nine".