4501620 has 72 divisors (see below), whose sum is σ = 13857480. Its totient is φ = 1182720.

The previous prime is 4501619. The next prime is 4501621. The reversal of 4501620 is 261054.

It is a happy number.

4501620 is a `hidden beast` number, since 45 + 0 + 1 + 620 = 666.

It is an interprime number because it is at equal distance from previous prime (4501619) and next prime (4501621).

It can be written as a sum of positive squares in 4 ways, for example, as 266256 + 4235364 = 516^2 + 2058^2 .

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 = 4501593 and 4501602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4501621) 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, 15880 + ... + 16160.

It is an arithmetic number, because the mean of its divisors is an integer number (192465).

Almost surely, 2^4501620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4501620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6928740).

4501620 is an abundant number, since it is smaller than the sum of its proper divisors (9355860).

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

4501620 is a wasteful number, since it uses less digits than its factorization.

4501620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 4501620 is about 2121.7021468623. The cubic root of 4501620 is about 165.1161716313.

Adding to 4501620 its reverse (261054), we get a palindrome (4762674).

It can be divided in two parts, 450 and 1620, that multiplied together give a cube (729000 = 90³).

The spelling of 4501620 in words is "four million, five hundred one thousand, six hundred twenty".