73428905 has 16 divisors (see below), whose sum is σ = 98725824. Its totient is φ = 51958080.

The previous prime is 73428893. The next prime is 73428913. The reversal of 73428905 is 50982437.

It is not a de Polignac number, because 73428905 - 2⁴ = 73428889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 16007 + ... + 20076.

It is an arithmetic number, because the mean of its divisors is an integer number (6170364).

Almost surely, 2^73428905 is an apocalyptic number.

It is an amenable number.

73428905 is a deficient number, since it is larger than the sum of its proper divisors (25296919).

73428905 is a wasteful number, since it uses less digits than its factorization.

73428905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36136.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 73428905 is about 8569.0667519865. The cubic root of 73428905 is about 418.7508329975.

The spelling of 73428905 in words is "seventy-three million, four hundred twenty-eight thousand, nine hundred five".