73428727 has 2 divisors, whose sum is σ = 73428728. Its totient is φ = 73428726.

The previous prime is 73428713. The next prime is 73428767. The reversal of 73428727 is 72782437.

It is an a-pointer prime, because the next prime (73428767) can be obtained adding 73428727 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73428727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73428727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73428767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36714363 + 36714364.

It is an arithmetic number, because the mean of its divisors is an integer number (36714364).

Almost surely, 2^73428727 is an apocalyptic number.

73428727 is a deficient number, since it is larger than the sum of its proper divisors (1).

73428727 is an equidigital number, since it uses as much as digits as its factorization.

73428727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131712, while the sum is 40.

The square root of 73428727 is about 8569.0563657850. The cubic root of 73428727 is about 418.7504946307.

The spelling of 73428727 in words is "seventy-three million, four hundred twenty-eight thousand, seven hundred twenty-seven".