20740313 has 16 divisors (see below), whose sum is σ = 23474880. Its totient is φ = 18158400.

The previous prime is 20740297. The next prime is 20740351. The reversal of 20740313 is 31304702.

It is a cyclic number.

It is not a de Polignac number, because 20740313 - 2⁴ = 20740297 is a prime.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 53123 + ... + 53511.

It is an arithmetic number, because the mean of its divisors is an integer number (1467180).

Almost surely, 2^20740313 is an apocalyptic number.

It is an amenable number.

20740313 is a deficient number, since it is larger than the sum of its proper divisors (2734567).

20740313 is a wasteful number, since it uses less digits than its factorization.

20740313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 20740313 is about 4554.1533790596. The cubic root of 20740313 is about 274.7504645487.

The spelling of 20740313 in words is "twenty million, seven hundred forty thousand, three hundred thirteen".