72550180 has 24 divisors (see below), whose sum is σ = 153930168. Its totient is φ = 28720128.

The previous prime is 72550157. The next prime is 72550183. The reversal of 72550180 is 8105527.

It can be written as a sum of positive squares in 4 ways, for example, as 2359296 + 70190884 = 1536^2 + 8378^2 .

It is not an unprimeable number, because it can be changed into a prime (72550183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16759 + ... + 20638.

It is an arithmetic number, because the mean of its divisors is an integer number (6413757).

Almost surely, 2^72550180 is an apocalyptic number.

It is an amenable number.

72550180 is an abundant number, since it is smaller than the sum of its proper divisors (81379988).

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

72550180 is a wasteful number, since it uses less digits than its factorization.

72550180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37503 (or 37501 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 72550180 is about 8517.6393443254. The cubic root of 72550180 is about 417.0737255756.

It can be divided in two parts, 725 and 50180, that added together give a palindrome (50905).

The spelling of 72550180 in words is "seventy-two million, five hundred fifty thousand, one hundred eighty".