20731334 has 8 divisors (see below), whose sum is σ = 33489120. Its totient is φ = 9568296.

The previous prime is 20731327. The next prime is 20731339. The reversal of 20731334 is 43313702.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20731339) 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, 398654 + ... + 398705.

It is an arithmetic number, because the mean of its divisors is an integer number (4186140).

Almost surely, 2^20731334 is an apocalyptic number.

20731334 is a deficient number, since it is larger than the sum of its proper divisors (12757786).

20731334 is a wasteful number, since it uses less digits than its factorization.

20731334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797374.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 20731334 is about 4553.1674689166. The cubic root of 20731334 is about 274.7108100441.

The spelling of 20731334 in words is "twenty million, seven hundred thirty-one thousand, three hundred thirty-four".