4539540 has 24 divisors (see below), whose sum is σ = 12710880. Its totient is φ = 1210528.

The previous prime is 4539517. The next prime is 4539541. The reversal of 4539540 is 459354.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 4539498 and 4539507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4539541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37770 + ... + 37889.

It is an arithmetic number, because the mean of its divisors is an integer number (529620).

Almost surely, 2^4539540 is an apocalyptic number.

It is an amenable number.

4539540 is an abundant number, since it is smaller than the sum of its proper divisors (8171340).

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

4539540 is a wasteful number, since it uses less digits than its factorization.

4539540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75671 (or 75669 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 4539540 is about 2130.6196281833. The cubic root of 4539540 is about 165.5785019585.

The spelling of 4539540 in words is "four million, five hundred thirty-nine thousand, five hundred forty".