20969033 has 4 divisors (see below), whose sum is σ = 21002388. Its totient is φ = 20935680.

The previous prime is 20969029. The next prime is 20969087. The reversal of 20969033 is 33096902.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15460624 + 5508409 = 3932^2 + 2347^2 .

It is a cyclic number.

It is not a de Polignac number, because 20969033 - 2² = 20969029 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20969833) 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, 15716 + ... + 16997.

It is an arithmetic number, because the mean of its divisors is an integer number (5250597).

Almost surely, 2^20969033 is an apocalyptic number.

It is an amenable number.

20969033 is a deficient number, since it is larger than the sum of its proper divisors (33355).

20969033 is an equidigital number, since it uses as much as digits as its factorization.

20969033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33354.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 20969033 is about 4579.1956717310. The cubic root of 20969033 is about 275.7567388534.

The spelling of 20969033 in words is "twenty million, nine hundred sixty-nine thousand, thirty-three".