4578321 has 16 divisors (see below), whose sum is σ = 7051968. Its totient is φ = 2611200.

The previous prime is 4578313. The next prime is 4578361. The reversal of 4578321 is 1238754.

It is not a de Polignac number, because 4578321 - 2³ = 4578313 is a prime.

It is a super-2 number, since 2×4578321² = 41922046358082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4578361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3520 + ... + 4641.

It is an arithmetic number, because the mean of its divisors is an integer number (440748).

Almost surely, 2^4578321 is an apocalyptic number.

It is an amenable number.

4578321 is a deficient number, since it is larger than the sum of its proper divisors (2473647).

4578321 is a wasteful number, since it uses less digits than its factorization.

4578321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8192.

The product of its digits is 6720, while the sum is 30.

The square root of 4578321 is about 2139.7011473568. The cubic root of 4578321 is about 166.0486744571.

It can be divided in two parts, 457 and 8321, that added together give a palindrome (8778).

The spelling of 4578321 in words is "four million, five hundred seventy-eight thousand, three hundred twenty-one".