20002307 has 16 divisors (see below), whose sum is σ = 23170560. Its totient is φ = 17109792.

The previous prime is 20002261. The next prime is 20002313. The reversal of 20002307 is 70320002.

It is a cyclic number.

It is not a de Polignac number, because 20002307 - 2¹⁴ = 19985923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20002291 and 20002300.

It is not an unprimeable number, because it can be changed into a prime (20002337) 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, 10748 + ... + 12470.

It is an arithmetic number, because the mean of its divisors is an integer number (1448160).

Almost surely, 2^20002307 is an apocalyptic number.

20002307 is a deficient number, since it is larger than the sum of its proper divisors (3168253).

20002307 is a wasteful number, since it uses less digits than its factorization.

20002307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802.

The product of its (nonzero) digits is 84, while the sum is 14.

The square root of 20002307 is about 4472.3938780031. The cubic root of 20002307 is about 271.4521981940.

Adding to 20002307 its reverse (70320002), we get a palindrome (90322309).

The spelling of 20002307 in words is "twenty million, two thousand, three hundred seven".