20740303 has 4 divisors (see below), whose sum is σ = 20877808. Its totient is φ = 20602800.

The previous prime is 20740297. The next prime is 20740351. The reversal of 20740303 is 30304702.

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-20740303 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 (20740373) 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, 68526 + ... + 68827.

It is an arithmetic number, because the mean of its divisors is an integer number (5219452).

Almost surely, 2^20740303 is an apocalyptic number.

20740303 is a deficient number, since it is larger than the sum of its proper divisors (137505).

20740303 is a wasteful number, since it uses less digits than its factorization.

20740303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137504.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 20740303 is about 4554.1522811606. The cubic root of 20740303 is about 274.7504203915.

The spelling of 20740303 in words is "twenty million, seven hundred forty thousand, three hundred three".