4509636 has 48 divisors (see below), whose sum is σ = 10967040. Its totient is φ = 1441440.

The previous prime is 4509623. The next prime is 4509647. The reversal of 4509636 is 6369054.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 4509597 and 4509606.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 57045 + ... + 57123.

It is an arithmetic number, because the mean of its divisors is an integer number (228480).

Almost surely, 2^4509636 is an apocalyptic number.

It is an amenable number.

4509636 is an abundant number, since it is smaller than the sum of its proper divisors (6457404).

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

4509636 is a wasteful number, since it uses less digits than its factorization.

4509636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 4509636 is about 2123.5903559773. The cubic root of 4509636 is about 165.2141205463.

The spelling of 4509636 in words is "four million, five hundred nine thousand, six hundred thirty-six".