73272403 has 2 divisors, whose sum is σ = 73272404. Its totient is φ = 73272402.

The previous prime is 73272391. The next prime is 73272413. The reversal of 73272403 is 30427237.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73272403 is a prime.

It is not a weakly prime, because it can be changed into another prime (73272413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36636201 + 36636202.

It is an arithmetic number, because the mean of its divisors is an integer number (36636202).

Almost surely, 2^73272403 is an apocalyptic number.

73272403 is a deficient number, since it is larger than the sum of its proper divisors (1).

73272403 is an equidigital number, since it uses as much as digits as its factorization.

73272403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 73272403 is about 8559.9300814902. The cubic root of 73272403 is about 418.4531211839.

It can be divided in two parts, 7327 and 2403, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 73272403 in words is "seventy-three million, two hundred seventy-two thousand, four hundred three".