153540636 has 12 divisors (see below), whose sum is σ = 358261512. Its totient is φ = 51180208.

The previous prime is 153540623. The next prime is 153540637. The reversal of 153540636 is 636045351.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 153540597 and 153540606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153540637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6397515 + ... + 6397538.

It is an arithmetic number, because the mean of its divisors is an integer number (29855126).

Almost surely, 2^153540636 is an apocalyptic number.

It is an amenable number.

153540636 is an abundant number, since it is smaller than the sum of its proper divisors (204720876).

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

153540636 is a wasteful number, since it uses less digits than its factorization.

153540636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12795060 (or 12795058 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 153540636 is about 12391.1515203390. The cubic root of 153540636 is about 535.4773577421.

Adding to 153540636 its reverse (636045351), we get a palindrome (789585987).

The spelling of 153540636 in words is "one hundred fifty-three million, five hundred forty thousand, six hundred thirty-six".