20302239 has 8 divisors (see below), whose sum is σ = 27107200. Its totient is φ = 13516056.

The previous prime is 20302223. The next prime is 20302259. The reversal of 20302239 is 93220302.

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

It is not a de Polignac number, because 20302239 - 2⁴ = 20302223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1939 + ... + 6660.

It is an arithmetic number, because the mean of its divisors is an integer number (3388400).

Almost surely, 2^20302239 is an apocalyptic number.

20302239 is a deficient number, since it is larger than the sum of its proper divisors (6804961).

20302239 is an equidigital number, since it uses as much as digits as its factorization.

20302239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9389.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 20302239 is about 4505.8005947889. The cubic root of 20302239 is about 272.8022693043.

The spelling of 20302239 in words is "twenty million, three hundred two thousand, two hundred thirty-nine".