73428923 has 2 divisors, whose sum is σ = 73428924. Its totient is φ = 73428922.

The previous prime is 73428913. The next prime is 73428931. The reversal of 73428923 is 32982437.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73428923 - 2²⁶ = 6320059 is a prime.

It is not a weakly prime, because it can be changed into another prime (73428913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36714461 + 36714462.

It is an arithmetic number, because the mean of its divisors is an integer number (36714462).

Almost surely, 2^73428923 is an apocalyptic number.

73428923 is a deficient number, since it is larger than the sum of its proper divisors (1).

73428923 is an equidigital number, since it uses as much as digits as its factorization.

73428923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 38.

The square root of 73428923 is about 8569.0678022758. The cubic root of 73428923 is about 418.7508672144.

The spelling of 73428923 in words is "seventy-three million, four hundred twenty-eight thousand, nine hundred twenty-three".