20796389 has 8 divisors (see below), whose sum is σ = 22557528. Its totient is φ = 19095040.

The previous prime is 20796383. The next prime is 20796401. The reversal of 20796389 is 98369702.

It can be written as a sum of positive squares in 4 ways, for example, as 21025 + 20775364 = 145^2 + 4558^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20796389 - 2²⁴ = 4019173 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20796383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14222 + ... + 15615.

It is an arithmetic number, because the mean of its divisors is an integer number (2819691).

Almost surely, 2^20796389 is an apocalyptic number.

It is an amenable number.

20796389 is a deficient number, since it is larger than the sum of its proper divisors (1761139).

20796389 is a wasteful number, since it uses less digits than its factorization.

20796389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29895.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 20796389 is about 4560.3058011497. The cubic root of 20796389 is about 274.9978578346.

The spelling of 20796389 in words is "twenty million, seven hundred ninety-six thousand, three hundred eighty-nine".