73305638 has 32 divisors (see below), whose sum is σ = 131708928. Its totient is φ = 29937600.

The previous prime is 73305619. The next prime is 73305641. The reversal of 73305638 is 83650337.

It is a junction number, because it is equal to n+sod(n) for n = 73305598 and 73305607.

It is a congruent 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, 27818 + ... + 30338.

It is an arithmetic number, because the mean of its divisors is an integer number (4115904).

Almost surely, 2^73305638 is an apocalyptic number.

73305638 is a deficient number, since it is larger than the sum of its proper divisors (58403290).

73305638 is a wasteful number, since it uses less digits than its factorization.

73305638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 73305638 is about 8561.8711739899. The cubic root of 73305638 is about 418.5163791398.

The spelling of 73305638 in words is "seventy-three million, three hundred five thousand, six hundred thirty-eight".