4531720 has 32 divisors (see below), whose sum is σ = 10258200. Its totient is φ = 1801728.

The previous prime is 4531663. The next prime is 4531729. The reversal of 4531720 is 271354.

It can be written as a sum of positive squares in 4 ways, for example, as 3849444 + 682276 = 1962^2 + 826^2 .

It is a super-3 number, since 3×4531720³ (a number of 21 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4531691 and 4531700.

It is not an unprimeable number, because it can be changed into a prime (4531729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10876 + ... + 11284.

Almost surely, 2^4531720 is an apocalyptic number.

4531720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4531720 is an abundant number, since it is smaller than the sum of its proper divisors (5726480).

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

4531720 is a wasteful number, since it uses less digits than its factorization.

4531720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697 (or 693 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 4531720 is about 2128.7836902795. The cubic root of 4531720 is about 165.4833698450.

The spelling of 4531720 in words is "four million, five hundred thirty-one thousand, seven hundred twenty".