20339712 has 66 divisors (see below), whose sum is σ = 58757088. Its totient is φ = 6776832.

The previous prime is 20339681. The next prime is 20339717. The reversal of 20339712 is 21793302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20339717) 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, 8113 + ... + 10319.

Almost surely, 2^20339712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20339712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29378544).

20339712 is an abundant number, since it is smaller than the sum of its proper divisors (38417376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20339712 is a wasteful number, since it uses less digits than its factorization.

20339712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233 (or 2212 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 20339712 is about 4509.9569842738. The cubic root of 20339712 is about 272.9700083786.

The spelling of 20339712 in words is "twenty million, three hundred thirty-nine thousand, seven hundred twelve".