20321374 has 16 divisors (see below), whose sum is σ = 33482880. Its totient is φ = 9207000.

The previous prime is 20321369. The next prime is 20321377. The reversal of 20321374 is 47312302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321377) 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, 10752 + ... + 12499.

It is an arithmetic number, because the mean of its divisors is an integer number (2092680).

Almost surely, 2^20321374 is an apocalyptic number.

20321374 is a deficient number, since it is larger than the sum of its proper divisors (13161506).

20321374 is a wasteful number, since it uses less digits than its factorization.

20321374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23295.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 20321374 is about 4507.9234687381. The cubic root of 20321374 is about 272.8879483977.

Adding to 20321374 its reverse (47312302), we get a palindrome (67633676).

The spelling of 20321374 in words is "twenty million, three hundred twenty-one thousand, three hundred seventy-four".