72280143 has 24 divisors (see below), whose sum is σ = 112799232. Its totient is φ = 44336448.

The previous prime is 72280081. The next prime is 72280157. The reversal of 72280143 is 34108227.

It is not a de Polignac number, because 72280143 - 2⁶ = 72280079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72280163) 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, 44005 + ... + 45617.

It is an arithmetic number, because the mean of its divisors is an integer number (4699968).

Almost surely, 2^72280143 is an apocalyptic number.

72280143 is a deficient number, since it is larger than the sum of its proper divisors (40519089).

72280143 is a wasteful number, since it uses less digits than its factorization.

72280143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015 (or 2012 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 72280143 is about 8501.7729327476. The cubic root of 72280143 is about 416.5556227466. Note that the first 3 decimals are identical.

The spelling of 72280143 in words is "seventy-two million, two hundred eighty thousand, one hundred forty-three".