72030660 has 48 divisors (see below), whose sum is σ = 217202496. Its totient is φ = 17730432.

The previous prime is 72030643. The next prime is 72030661. The reversal of 72030660 is 6603027.

It is a self number, because there is not a number n which added to its sum of digits gives 72030660.

It is not an unprimeable number, because it can be changed into a prime (72030661) by changing a digit.

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, 45394 + ... + 46953.

It is an arithmetic number, because the mean of its divisors is an integer number (4525052).

Almost surely, 2^72030660 is an apocalyptic number.

It is an amenable number.

72030660 is an abundant number, since it is smaller than the sum of its proper divisors (145171836).

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

72030660 is a wasteful number, since it uses less digits than its factorization.

72030660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92372 (or 92370 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 72030660 is about 8487.0878397717. The cubic root of 72030660 is about 416.0758074989.

Adding to 72030660 its reverse (6603027), we get a palindrome (78633687).

The spelling of 72030660 in words is "seventy-two million, thirty thousand, six hundred sixty".