20744307 has 12 divisors (see below), whose sum is σ = 30201600. Its totient is φ = 13719888.

The previous prime is 20744293. The next prime is 20744327. The reversal of 20744307 is 70344702.

It is not a de Polignac number, because 20744307 - 2⁸ = 20744051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20744327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7932 + ... + 10217.

It is an arithmetic number, because the mean of its divisors is an integer number (2516800).

Almost surely, 2^20744307 is an apocalyptic number.

20744307 is a deficient number, since it is larger than the sum of its proper divisors (9457293).

20744307 is a wasteful number, since it uses less digits than its factorization.

20744307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18282 (or 18279 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 20744307 is about 4554.5918587729. The cubic root of 20744307 is about 274.7680998165.

The spelling of 20744307 in words is "twenty million, seven hundred forty-four thousand, three hundred seven".