72443635 has 8 divisors (see below), whose sum is σ = 94835376. Its totient is φ = 52686240.

The previous prime is 72443611. The next prime is 72443639. The reversal of 72443635 is 53634427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72443635 - 2¹⁵ = 72410867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72443635.

It is not an unprimeable number, because it can be changed into a prime (72443639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 658524 + ... + 658633.

It is an arithmetic number, because the mean of its divisors is an integer number (11854422).

Almost surely, 2^72443635 is an apocalyptic number.

72443635 is a deficient number, since it is larger than the sum of its proper divisors (22391741).

72443635 is a wasteful number, since it uses less digits than its factorization.

72443635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317173.

The product of its digits is 60480, while the sum is 34.

The square root of 72443635 is about 8511.3826726332. The cubic root of 72443635 is about 416.8694582631.

The spelling of 72443635 in words is "seventy-two million, four hundred forty-three thousand, six hundred thirty-five".