20207307 has 8 divisors (see below), whose sum is σ = 26972560. Its totient is φ = 13456800.

The previous prime is 20207303. The next prime is 20207309. The reversal of 20207307 is 70370202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20207307 - 2² = 20207303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20207303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57 + ... + 6357.

It is an arithmetic number, because the mean of its divisors is an integer number (3371570).

Almost surely, 2^20207307 is an apocalyptic number.

20207307 is a deficient number, since it is larger than the sum of its proper divisors (6765253).

20207307 is a wasteful number, since it uses less digits than its factorization.

20207307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7373.

The product of its (nonzero) digits is 588, while the sum is 21.

The square root of 20207307 is about 4495.2538304305. The cubic root of 20207307 is about 272.3764027204.

Adding to 20207307 its reverse (70370202), we get a palindrome (90577509).

The spelling of 20207307 in words is "twenty million, two hundred seven thousand, three hundred seven".