72275312 has 20 divisors (see below), whose sum is σ = 142125576. Its totient is φ = 35597760.

The previous prime is 72275311. The next prime is 72275317. The reversal of 72275312 is 21357227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72275311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32639 + ... + 34782.

Almost surely, 2^72275312 is an apocalyptic number.

It is an amenable number.

72275312 is a deficient number, since it is larger than the sum of its proper divisors (69850264).

72275312 is a wasteful number, since it uses less digits than its factorization.

72275312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67496 (or 67490 counting only the distinct ones).

The product of its digits is 5880, while the sum is 29.

The square root of 72275312 is about 8501.4888107907. The cubic root of 72275312 is about 416.5463420739.

The spelling of 72275312 in words is "seventy-two million, two hundred seventy-five thousand, three hundred twelve".