72303443 has 2 divisors, whose sum is σ = 72303444. Its totient is φ = 72303442.

The previous prime is 72303403. The next prime is 72303449. The reversal of 72303443 is 34430327.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72303443 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72303449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36151721 + 36151722.

It is an arithmetic number, because the mean of its divisors is an integer number (36151722).

Almost surely, 2^72303443 is an apocalyptic number.

72303443 is a deficient number, since it is larger than the sum of its proper divisors (1).

72303443 is an equidigital number, since it uses as much as digits as its factorization.

72303443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 26.

The square root of 72303443 is about 8503.1431247510. The cubic root of 72303443 is about 416.6003777922.

The spelling of 72303443 in words is "seventy-two million, three hundred three thousand, four hundred forty-three".