20344763 has 4 divisors (see below), whose sum is σ = 21415560. Its totient is φ = 19273968.

The previous prime is 20344759. The next prime is 20344789. The reversal of 20344763 is 36744302.

It is a happy number.

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 20344763 - 2² = 20344759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20344703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535370 + ... + 535407.

It is an arithmetic number, because the mean of its divisors is an integer number (5353890).

Almost surely, 2^20344763 is an apocalyptic number.

20344763 is a deficient number, since it is larger than the sum of its proper divisors (1070797).

20344763 is a wasteful number, since it uses less digits than its factorization.

20344763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070796.

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 20344763 is about 4510.5169326808. The cubic root of 20344763 is about 272.9926022317.

The spelling of 20344763 in words is "twenty million, three hundred forty-four thousand, seven hundred sixty-three".