20769833 has 4 divisors (see below), whose sum is σ = 23736960. Its totient is φ = 17802708.

The previous prime is 20769823. The next prime is 20769857. The reversal of 20769833 is 33896702.

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 20769833 - 2⁸ = 20769577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20769803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1483553 + ... + 1483566.

It is an arithmetic number, because the mean of its divisors is an integer number (5934240).

Almost surely, 2^20769833 is an apocalyptic number.

It is an amenable number.

20769833 is a deficient number, since it is larger than the sum of its proper divisors (2967127).

20769833 is an equidigital number, since it uses as much as digits as its factorization.

20769833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967126.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 20769833 is about 4557.3932242017. The cubic root of 20769833 is about 274.8807549122.

The spelling of 20769833 in words is "twenty million, seven hundred sixty-nine thousand, eight hundred thirty-three".