72273907 has 2 divisors, whose sum is σ = 72273908. Its totient is φ = 72273906.

The previous prime is 72273871. The next prime is 72273923. The reversal of 72273907 is 70937227.

It is a strong prime.

It is an emirp because it is prime and its reverse (70937227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72273907 - 2¹⁹ = 71749619 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72273937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36136953 + 36136954.

It is an arithmetic number, because the mean of its divisors is an integer number (36136954).

Almost surely, 2^72273907 is an apocalyptic number.

72273907 is a deficient number, since it is larger than the sum of its proper divisors (1).

72273907 is an equidigital number, since it uses as much as digits as its factorization.

72273907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37044, while the sum is 37.

The square root of 72273907 is about 8501.4061778038. The cubic root of 72273907 is about 416.5436428977.

The spelling of 72273907 in words is "seventy-two million, two hundred seventy-three thousand, nine hundred seven".