20746339 has 16 divisors (see below), whose sum is σ = 22302720. Its totient is φ = 19262880.

The previous prime is 20746303. The next prime is 20746351. The reversal of 20746339 is 93364702.

It is a cyclic number.

It is not a de Polignac number, because 20746339 - 2²³ = 12357731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20746379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158304 + ... + 158434.

It is an arithmetic number, because the mean of its divisors is an integer number (1393920).

Almost surely, 2^20746339 is an apocalyptic number.

20746339 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

20746339 is a deficient number, since it is larger than the sum of its proper divisors (1556381).

20746339 is a wasteful number, since it uses less digits than its factorization.

20746339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 20746339 is about 4554.8149248899. The cubic root of 20746339 is about 274.7770711221. Note that the first 3 decimals are identical.

The spelling of 20746339 in words is "twenty million, seven hundred forty-six thousand, three hundred thirty-nine".