20237243 has 6 divisors (see below), whose sum is σ = 21913884. Its totient is φ = 18680376.

The previous prime is 20237237. The next prime is 20237249. The reversal of 20237243 is 34273202.

It is an interprime number because it is at equal distance from previous prime (20237237) and next prime (20237249).

It is not a de Polignac number, because 20237243 - 2⁶ = 20237179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20237249) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59705 + ... + 60042.

It is an arithmetic number, because the mean of its divisors is an integer number (3652314).

Almost surely, 2^20237243 is an apocalyptic number.

20237243 is a deficient number, since it is larger than the sum of its proper divisors (1676641).

20237243 is a wasteful number, since it uses less digits than its factorization.

20237243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119773 (or 119760 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 20237243 is about 4498.5823322465. The cubic root of 20237243 is about 272.5108398460.

The spelling of 20237243 in words is "twenty million, two hundred thirty-seven thousand, two hundred forty-three".