20321104 has 20 divisors (see below), whose sum is σ = 39448864. Its totient is φ = 10140768.

The previous prime is 20321087. The next prime is 20321131. The reversal of 20321104 is 40112302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10759 + ... + 12505.

Almost surely, 2^20321104 is an apocalyptic number.

It is an amenable number.

20321104 is a deficient number, since it is larger than the sum of its proper divisors (19127760).

20321104 is a wasteful number, since it uses less digits than its factorization.

20321104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482 (or 2476 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20321104 is about 4507.8935213689. The cubic root of 20321104 is about 272.8867398168.

Adding to 20321104 its reverse (40112302), we get a palindrome (60433406).

It can be divided in two parts, 2032 and 1104, that added together give a square (3136 = 56²).

The spelling of 20321104 in words is "twenty million, three hundred twenty-one thousand, one hundred four".