72288634 has 16 divisors (see below), whose sum is σ = 119790720. Its totient is φ = 32441760.

The previous prime is 72288631. The next prime is 72288763. The reversal of 72288634 is 43688227.

It is not an unprimeable number, because it can be changed into a prime (72288631) 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, 19059 + ... + 22534.

It is an arithmetic number, because the mean of its divisors is an integer number (7486920).

Almost surely, 2^72288634 is an apocalyptic number.

72288634 is a deficient number, since it is larger than the sum of its proper divisors (47502086).

72288634 is a wasteful number, since it uses less digits than its factorization.

72288634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41685.

The product of its digits is 129024, while the sum is 40.

The square root of 72288634 is about 8502.2722845131. The cubic root of 72288634 is about 416.5719335209.

The spelling of 72288634 in words is "seventy-two million, two hundred eighty-eight thousand, six hundred thirty-four".