72036530 has 32 divisors (see below), whose sum is σ = 132148800. Its totient is φ = 28268352.

The previous prime is 72036499. The next prime is 72036541. The reversal of 72036530 is 3563027.

It is a self number, because there is not a number n which added to its sum of digits gives 72036530.

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, 189881 + ... + 190259.

It is an arithmetic number, because the mean of its divisors is an integer number (4129650).

Almost surely, 2^72036530 is an apocalyptic number.

72036530 is a deficient number, since it is larger than the sum of its proper divisors (60112270).

72036530 is a wasteful number, since it uses less digits than its factorization.

72036530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698.

The product of its (nonzero) digits is 3780, while the sum is 26.

The square root of 72036530 is about 8487.4336521707. The cubic root of 72036530 is about 416.0871096243.

Adding to 72036530 its reverse (3563027), we get a palindrome (75599557).

The spelling of 72036530 in words is "seventy-two million, thirty-six thousand, five hundred thirty".