72772072 has 16 divisors (see below), whose sum is σ = 137491200. Its totient is φ = 36107760.

The previous prime is 72772067. The next prime is 72772079. The reversal of 72772072 is 27027727.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72772079) 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, 33672 + ... + 35767.

It is an arithmetic number, because the mean of its divisors is an integer number (8593200).

Almost surely, 2^72772072 is an apocalyptic number.

It is an amenable number.

72772072 is a deficient number, since it is larger than the sum of its proper divisors (64719128).

72772072 is a wasteful number, since it uses less digits than its factorization.

72772072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69576 (or 69572 counting only the distinct ones).

The product of its (nonzero) digits is 19208, while the sum is 34.

The square root of 72772072 is about 8530.6548400460. The cubic root of 72772072 is about 417.4984942635.

Adding to 72772072 its reverse (27027727), we get a palindrome (99799799).

The spelling of 72772072 in words is "seventy-two million, seven hundred seventy-two thousand, seventy-two".