72560409 has 8 divisors (see below), whose sum is σ = 97181952. Its totient is φ = 48156240.

The previous prime is 72560387. The next prime is 72560413. The reversal of 72560409 is 90406527.

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

It is not a de Polignac number, because 72560409 - 2¹¹ = 72558361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72560409.

It is not an unprimeable number, because it can be changed into a prime (72560309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53562 + ... + 54899.

It is an arithmetic number, because the mean of its divisors is an integer number (12147744).

Almost surely, 2^72560409 is an apocalyptic number.

It is an amenable number.

72560409 is a deficient number, since it is larger than the sum of its proper divisors (24621543).

72560409 is a wasteful number, since it uses less digits than its factorization.

72560409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108687.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 72560409 is about 8518.2397829599. The cubic root of 72560409 is about 417.0933260170.

The spelling of 72560409 in words is "seventy-two million, five hundred sixty thousand, four hundred nine".