72101296 has 10 divisors (see below), whose sum is σ = 139696292. Its totient is φ = 36050640.

The previous prime is 72101291. The next prime is 72101311. The reversal of 72101296 is 69210127.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (72101291) 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 as a sum of consecutive naturals, namely, 2253150 + ... + 2253181.

Almost surely, 2^72101296 is an apocalyptic number.

It is an amenable number.

72101296 is a deficient number, since it is larger than the sum of its proper divisors (67594996).

72101296 is a wasteful number, since it uses less digits than its factorization.

72101296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4506339 (or 4506333 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 72101296 is about 8491.2482003531. The cubic root of 72101296 is about 416.2117696434.

The spelling of 72101296 in words is "seventy-two million, one hundred one thousand, two hundred ninety-six".