72236385 has 96 divisors (see below), whose sum is σ = 145541760. Its totient is φ = 32845824.

The previous prime is 72236363. The next prime is 72236387. The reversal of 72236385 is 58363227.

It is not a de Polignac number, because 72236385 - 2¹² = 72232289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72236387) 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 95 ways as a sum of consecutive naturals, for example, 744657 + ... + 744753.

It is an arithmetic number, because the mean of its divisors is an integer number (1516060).

Almost surely, 2^72236385 is an apocalyptic number.

It is an amenable number.

72236385 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

72236385 is a wasteful number, since it uses less digits than its factorization.

72236385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 204 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 72236385 is about 8499.1990799134. The cubic root of 72236385 is about 416.4715456187.

The spelling of 72236385 in words is "seventy-two million, two hundred thirty-six thousand, three hundred eighty-five".