72118535 has 16 divisors (see below), whose sum is σ = 87993216. Its totient is φ = 56736288.

The previous prime is 72118523. The next prime is 72118537. The reversal of 72118535 is 53581127.

It is a cyclic number.

It is not a de Polignac number, because 72118535 - 2⁸ = 72118279 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 (72118537) 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 in 15 ways as a sum of consecutive naturals, for example, 86792 + ... + 87618.

It is an arithmetic number, because the mean of its divisors is an integer number (5499576).

Almost surely, 2^72118535 is an apocalyptic number.

72118535 is a deficient number, since it is larger than the sum of its proper divisors (15874681).

72118535 is a wasteful number, since it uses less digits than its factorization.

72118535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102.

The product of its digits is 8400, while the sum is 32.

The square root of 72118535 is about 8492.2632436825. The cubic root of 72118535 is about 416.2449382702.

The spelling of 72118535 in words is "seventy-two million, one hundred eighteen thousand, five hundred thirty-five".