804732321 has 4 divisors (see below), whose sum is σ = 1072976432. Its totient is φ = 536488212.

The previous prime is 804732311. The next prime is 804732323. The reversal of 804732321 is 123237408.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 804732321 - 2¹¹ = 804730273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (804732323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134122051 + ... + 134122056.

It is an arithmetic number, because the mean of its divisors is an integer number (268244108).

Almost surely, 2^804732321 is an apocalyptic number.

It is an amenable number.

804732321 is a deficient number, since it is larger than the sum of its proper divisors (268244111).

804732321 is a wasteful number, since it uses less digits than its factorization.

804732321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268244110.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 804732321 is about 28367.8043034705. The cubic root of 804732321 is about 930.1446266000.

Adding to 804732321 its reverse (123237408), we get a palindrome (927969729).

The spelling of 804732321 in words is "eight hundred four million, seven hundred thirty-two thousand, three hundred twenty-one".