20763343 has 4 divisors (see below), whose sum is σ = 21269808. Its totient is φ = 20256880.

The previous prime is 20763283. The next prime is 20763349. The reversal of 20763343 is 34336702.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20763343 is a prime.

It is a super-2 number, since 2×20763343² = 862232825071298, 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 (20763349) 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, 253171 + ... + 253252.

It is an arithmetic number, because the mean of its divisors is an integer number (5317452).

Almost surely, 2^20763343 is an apocalyptic number.

20763343 is a deficient number, since it is larger than the sum of its proper divisors (506465).

20763343 is an equidigital number, since it uses as much as digits as its factorization.

20763343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506464.

The product of its (nonzero) digits is 9072, while the sum is 28.

The square root of 20763343 is about 4556.6811387237. The cubic root of 20763343 is about 274.8521210445.

The spelling of 20763343 in words is "twenty million, seven hundred sixty-three thousand, three hundred forty-three".