72318435 has 16 divisors (see below), whose sum is σ = 132239616. Its totient is φ = 33059808.

The previous prime is 72318409. The next prime is 72318437. The reversal of 72318435 is 53481327.

It is not a de Polignac number, because 72318435 - 2²² = 68124131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72318396 and 72318405.

It is not an unprimeable number, because it can be changed into a prime (72318437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344269 + ... + 344478.

It is an arithmetic number, because the mean of its divisors is an integer number (8264976).

Almost surely, 2^72318435 is an apocalyptic number.

72318435 is a deficient number, since it is larger than the sum of its proper divisors (59921181).

72318435 is a wasteful number, since it uses less digits than its factorization.

72318435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688762.

The product of its digits is 20160, while the sum is 33.

The square root of 72318435 is about 8504.0246354300. The cubic root of 72318435 is about 416.6291696034.

The spelling of 72318435 in words is "seventy-two million, three hundred eighteen thousand, four hundred thirty-five".