20321334 has 32 divisors (see below), whose sum is σ = 49265280. Its totient is φ = 6157800.

The previous prime is 20321303. The next prime is 20321339. The reversal of 20321334 is 43312302.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321339) 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, 16512 + ... + 17699.

It is an arithmetic number, because the mean of its divisors is an integer number (1539540).

Almost surely, 2^20321334 is an apocalyptic number.

20321334 is an abundant number, since it is smaller than the sum of its proper divisors (28943946).

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

20321334 is a wasteful number, since it uses less digits than its factorization.

20321334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34233 (or 34227 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 20321334 is about 4507.9190321034. The cubic root of 20321334 is about 272.8877693494.

Adding to 20321334 its reverse (43312302), we get a palindrome (63633636).

The spelling of 20321334 in words is "twenty million, three hundred twenty-one thousand, three hundred thirty-four".