72013535 has 8 divisors (see below), whose sum is σ = 94272336. Its totient is φ = 52373440.

The previous prime is 72013531. The next prime is 72013559. The reversal of 72013535 is 53531027.

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

It is not a de Polignac number, because 72013535 - 2² = 72013531 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72013531) 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, 654614 + ... + 654723.

It is an arithmetic number, because the mean of its divisors is an integer number (11784042).

Almost surely, 2^72013535 is an apocalyptic number.

72013535 is a deficient number, since it is larger than the sum of its proper divisors (22258801).

72013535 is a wasteful number, since it uses less digits than its factorization.

72013535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309353.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 72013535 is about 8486.0788942833. The cubic root of 72013535 is about 416.0428314350.

The spelling of 72013535 in words is "seventy-two million, thirteen thousand, five hundred thirty-five".