4540820 has 24 divisors (see below), whose sum is σ = 9865800. Its totient is φ = 1753472.

The previous prime is 4540807. The next prime is 4540883. The reversal of 4540820 is 280454.

It can be written as a sum of positive squares in 4 ways, for example, as 71824 + 4468996 = 268^2 + 2114^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3335 + ... + 4494.

It is an arithmetic number, because the mean of its divisors is an integer number (411075).

Almost surely, 2^4540820 is an apocalyptic number.

It is an amenable number.

4540820 is an abundant number, since it is smaller than the sum of its proper divisors (5324980).

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

4540820 is a wasteful number, since it uses less digits than its factorization.

4540820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7867 (or 7865 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 4540820 is about 2130.9199891127. The cubic root of 4540820 is about 165.5940630481.

The spelling of 4540820 in words is "four million, five hundred forty thousand, eight hundred twenty".