20372263 has 2 divisors, whose sum is σ = 20372264. Its totient is φ = 20372262.

The previous prime is 20372249. The next prime is 20372279. The reversal of 20372263 is 36227302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20372263 - 2⁹ = 20371751 is a prime.

It is equal to p_1292713 and since 20372263 and 1292713 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20372293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10186131 + 10186132.

It is an arithmetic number, because the mean of its divisors is an integer number (10186132).

Almost surely, 2^20372263 is an apocalyptic number.

20372263 is a deficient number, since it is larger than the sum of its proper divisors (1).

20372263 is an equidigital number, since it uses as much as digits as its factorization.

20372263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 20372263 is about 4513.5643343150. The cubic root of 20372263 is about 273.1155481476.

Adding to 20372263 its reverse (36227302), we get a palindrome (56599565).

The spelling of 20372263 in words is "twenty million, three hundred seventy-two thousand, two hundred sixty-three".