72727505 has 16 divisors (see below), whose sum is σ = 91385280. Its totient is φ = 55489728.

The previous prime is 72727483. The next prime is 72727511. The reversal of 72727505 is 50572727.

It is a cyclic number.

It is not a de Polignac number, because 72727505 - 2¹⁰ = 72726481 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9014 + ... + 15056.

It is an arithmetic number, because the mean of its divisors is an integer number (5711580).

Almost surely, 2^72727505 is an apocalyptic number.

It is an amenable number.

72727505 is a deficient number, since it is larger than the sum of its proper divisors (18657775).

72727505 is a wasteful number, since it uses less digits than its factorization.

72727505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6160.

The product of its (nonzero) digits is 34300, while the sum is 35.

The square root of 72727505 is about 8528.0422724093. The cubic root of 72727505 is about 417.4132488549.

The spelling of 72727505 in words is "seventy-two million, seven hundred twenty-seven thousand, five hundred five".