72270530 has 16 divisors (see below), whose sum is σ = 133113024. Its totient is φ = 28235760.

The previous prime is 72270521. The next prime is 72270593. The reversal of 72270530 is 3507227.

It is a super-3 number, since 3×72270530³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72270530.

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 7 ways as a sum of consecutive naturals, for example, 83606 + ... + 84465.

It is an arithmetic number, because the mean of its divisors is an integer number (8319564).

Almost surely, 2^72270530 is an apocalyptic number.

72270530 is a deficient number, since it is larger than the sum of its proper divisors (60842494).

72270530 is a wasteful number, since it uses less digits than its factorization.

72270530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168121.

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 72270530 is about 8501.2075612821. The cubic root of 72270530 is about 416.5371551262.

Adding to 72270530 its reverse (3507227), we get a palindrome (75777757).

The spelling of 72270530 in words is "seventy-two million, two hundred seventy thousand, five hundred thirty".