20802343 has 4 divisors (see below), whose sum is σ = 20935000. Its totient is φ = 20669688.

The previous prime is 20802317. The next prime is 20802371. The reversal of 20802343 is 34320802.

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

It is a cyclic number.

It is not a de Polignac number, because 20802343 - 2⁵ = 20802311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20800343) 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, 66093 + ... + 66406.

It is an arithmetic number, because the mean of its divisors is an integer number (5233750).

Almost surely, 2^20802343 is an apocalyptic number.

20802343 is a deficient number, since it is larger than the sum of its proper divisors (132657).

20802343 is a wasteful number, since it uses less digits than its factorization.

20802343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132656.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 20802343 is about 4560.9585615307. The cubic root of 20802343 is about 275.0240992654.

The spelling of 20802343 in words is "twenty million, eight hundred two thousand, three hundred forty-three".