72260560 has 20 divisors (see below), whose sum is σ = 168005988. Its totient is φ = 28904192.

The previous prime is 72260533. The next prime is 72260561. The reversal of 72260560 is 6506227.

It can be written as a sum of positive squares in 2 ways, for example, as 32216976 + 40043584 = 5676^2 + 6328^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72260561) 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 3 ways as a sum of consecutive naturals, for example, 451549 + ... + 451708.

Almost surely, 2^72260560 is an apocalyptic number.

It is an amenable number.

72260560 is an abundant number, since it is smaller than the sum of its proper divisors (95745428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72260560 is a wasteful number, since it uses less digits than its factorization.

72260560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903270 (or 903264 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 72260560 is about 8500.6211537746. The cubic root of 72260560 is about 416.5179999398.

Adding to 72260560 its reverse (6506227), we get a palindrome (78766787).

The spelling of 72260560 in words is "seventy-two million, two hundred sixty thousand, five hundred sixty".