72270289 has 8 divisors (see below), whose sum is σ = 88948160. Its totient is φ = 57180816.

The previous prime is 72270283. The next prime is 72270307. The reversal of 72270289 is 98207227.

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

It is not a de Polignac number, because 72270289 - 2⁹ = 72269777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72270283) 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, 396999 + ... + 397180.

It is an arithmetic number, because the mean of its divisors is an integer number (11118520).

Almost surely, 2^72270289 is an apocalyptic number.

It is an amenable number.

72270289 is a deficient number, since it is larger than the sum of its proper divisors (16677871).

72270289 is a wasteful number, since it uses less digits than its factorization.

72270289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794199.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 72270289 is about 8501.1933868134. The cubic root of 72270289 is about 416.5366921179.

The spelling of 72270289 in words is "seventy-two million, two hundred seventy thousand, two hundred eighty-nine".