72585580 has 72 divisors (see below), whose sum is σ = 166731264. Its totient is φ = 26449920.

The previous prime is 72585551. The next prime is 72585581. The reversal of 72585580 is 8558527.

It is not an unprimeable number, because it can be changed into a prime (72585581) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 571477 + ... + 571603.

It is an arithmetic number, because the mean of its divisors is an integer number (2315712).

Almost surely, 2^72585580 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72585580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83365632).

72585580 is an abundant number, since it is smaller than the sum of its proper divisors (94145684).

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

72585580 is a wasteful number, since it uses less digits than its factorization.

72585580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 40.

The square root of 72585580 is about 8519.7171314545. The cubic root of 72585580 is about 417.1415499383.

The spelling of 72585580 in words is "seventy-two million, five hundred eighty-five thousand, five hundred eighty".