72303403 has 2 divisors, whose sum is σ = 72303404. Its totient is φ = 72303402.

The previous prime is 72303391. The next prime is 72303443. The reversal of 72303403 is 30430327.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72303403 - 2²¹ = 70206251 is a prime.

It is not a weakly prime, because it can be changed into another prime (72303443) 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, 36151701 + 36151702.

It is an arithmetic number, because the mean of its divisors is an integer number (36151702).

Almost surely, 2^72303403 is an apocalyptic number.

72303403 is a deficient number, since it is larger than the sum of its proper divisors (1).

72303403 is an equidigital number, since it uses as much as digits as its factorization.

72303403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 22.

The square root of 72303403 is about 8503.1407726792. The cubic root of 72303403 is about 416.6003009678.

The spelling of 72303403 in words is "seventy-two million, three hundred three thousand, four hundred three".