72303373 has 2 divisors, whose sum is σ = 72303374. Its totient is φ = 72303372.

The previous prime is 72303323. The next prime is 72303383. The reversal of 72303373 is 37330327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55681444 + 16621929 = 7462^2 + 4077^2 .

It is an emirp because it is prime and its reverse (37330327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72303373 - 2²¹ = 70206221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72303323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36151686 + 36151687.

It is an arithmetic number, because the mean of its divisors is an integer number (36151687).

Almost surely, 2^72303373 is an apocalyptic number.

It is an amenable number.

72303373 is a deficient number, since it is larger than the sum of its proper divisors (1).

72303373 is an equidigital number, since it uses as much as digits as its factorization.

72303373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938, while the sum is 28.

The square root of 72303373 is about 8503.1390086250. The cubic root of 72303373 is about 416.6002433494.

The spelling of 72303373 in words is "seventy-two million, three hundred three thousand, three hundred seventy-three".