4782321 has 40 divisors (see below), whose sum is σ = 7945344. Its totient is φ = 2851200.

The previous prime is 4782317. The next prime is 4782329. The reversal of 4782321 is 1232874.

It is not a de Polignac number, because 4782321 - 2² = 4782317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (4782329) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 31596 + ... + 31746.

Almost surely, 2^4782321 is an apocalyptic number.

It is an amenable number.

4782321 is a deficient number, since it is larger than the sum of its proper divisors (3163023).

4782321 is a wasteful number, since it uses less digits than its factorization.

4782321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 194 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 4782321 is about 2186.8518468337. The cubic root of 4782321 is about 168.4791804207.

The spelling of 4782321 in words is "four million, seven hundred eighty-two thousand, three hundred twenty-one".