4536540 has 96 divisors (see below), whose sum is σ = 14622720. Its totient is φ = 1166400.

The previous prime is 4536529. The next prime is 4536547. The reversal of 4536540 is 456354.

4536540 is a `hidden beast` number, since 4 + 5 + 3 + 654 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4536547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16605 + ... + 16875.

It is an arithmetic number, because the mean of its divisors is an integer number (152320).

Almost surely, 2^4536540 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 4536540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7311360).

4536540 is an abundant number, since it is smaller than the sum of its proper divisors (10086180).

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

4536540 is a wasteful number, since it uses less digits than its factorization.

4536540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 4536540 is about 2129.9154912813. The cubic root of 4536540 is about 165.5420191893.

It can be divided in two parts, 45 and 36540, that added together give a triangular number (36585 = T₂₇₀).

The spelling of 4536540 in words is "four million, five hundred thirty-six thousand, five hundred forty".