4531320 has 96 divisors (see below), whose sum is σ = 15135120. Its totient is φ = 1175040.

The previous prime is 4531313. The next prime is 4531321. The reversal of 4531320 is 231354.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 4531293 and 4531302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4531321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14607 + ... + 14913.

Almost surely, 2^4531320 is an apocalyptic number.

4531320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4531320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7567560).

4531320 is an abundant number, since it is smaller than the sum of its proper divisors (10603800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4531320 is a wasteful number, since it uses less digits than its factorization.

4531320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 4531320 is about 2128.6897378434. The cubic root of 4531320 is about 165.4785008111.

Adding to 4531320 its reverse (231354), we get a palindrome (4762674).

It can be divided in two parts, 4531 and 320, that added together give a triangular number (4851 = T₉₈).

The spelling of 4531320 in words is "four million, five hundred thirty-one thousand, three hundred twenty".