72300289 has 2 divisors, whose sum is σ = 72300290. Its totient is φ = 72300288.

The previous prime is 72300287. The next prime is 72300353. The reversal of 72300289 is 98200327.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43784689 + 28515600 = 6617^2 + 5340^2 .

It is a cyclic number.

It is not a de Polignac number, because 72300289 - 2¹ = 72300287 is a prime.

Together with 72300287, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 72300289.

It is not a weakly prime, because it can be changed into another prime (72300281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36150144 + 36150145.

It is an arithmetic number, because the mean of its divisors is an integer number (36150145).

Almost surely, 2^72300289 is an apocalyptic number.

It is an amenable number.

72300289 is a deficient number, since it is larger than the sum of its proper divisors (1).

72300289 is an equidigital number, since it uses as much as digits as its factorization.

72300289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 72300289 is about 8502.9576618962. The cubic root of 72300289 is about 416.5943200968.

The spelling of 72300289 in words is "seventy-two million, three hundred thousand, two hundred eighty-nine".