72263512 has 32 divisors (see below), whose sum is σ = 138600000. Its totient is φ = 35313408.

The previous prime is 72263507. The next prime is 72263519. The reversal of 72263512 is 21536227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72263519) 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 7 ways as a sum of consecutive naturals, for example, 68364 + ... + 69412.

It is an arithmetic number, because the mean of its divisors is an integer number (4331250).

Almost surely, 2^72263512 is an apocalyptic number.

It is an amenable number.

72263512 is a deficient number, since it is larger than the sum of its proper divisors (66336488).

72263512 is a wasteful number, since it uses less digits than its factorization.

72263512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243 (or 1239 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 72263512 is about 8500.7947863714. The cubic root of 72263512 is about 416.5236717493.

Adding to 72263512 its reverse (21536227), we get a palindrome (93799739).

The spelling of 72263512 in words is "seventy-two million, two hundred sixty-three thousand, five hundred twelve".