20237099 has 4 divisors (see below), whose sum is σ = 20934960. Its totient is φ = 19539240.

The previous prime is 20237093. The next prime is 20237101. The reversal of 20237099 is 99073202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20237099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20237093) 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 3 ways as a sum of consecutive naturals, for example, 348887 + ... + 348944.

It is an arithmetic number, because the mean of its divisors is an integer number (5233740).

Almost surely, 2^20237099 is an apocalyptic number.

20237099 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

20237099 is a deficient number, since it is larger than the sum of its proper divisors (697861).

20237099 is an equidigital number, since it uses as much as digits as its factorization.

20237099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697860.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 20237099 is about 4498.5663271758. The cubic root of 20237099 is about 272.5101934856.

The spelling of 20237099 in words is "twenty million, two hundred thirty-seven thousand, ninety-nine".