73738945 has 16 divisors (see below), whose sum is σ = 107077248. Its totient is φ = 47589120.

The previous prime is 73738939. The next prime is 73738949. The reversal of 73738945 is 54983737.

It is a happy number.

It is not a de Polignac number, because 73738945 - 2⁵ = 73738913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73738895 and 73738904.

It is not an unprimeable number, because it can be changed into a prime (73738949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61371 + ... + 62560.

It is an arithmetic number, because the mean of its divisors is an integer number (6692328).

Almost surely, 2^73738945 is an apocalyptic number.

It is an amenable number.

73738945 is a deficient number, since it is larger than the sum of its proper divisors (33338303).

73738945 is a wasteful number, since it uses less digits than its factorization.

73738945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123960.

The product of its digits is 635040, while the sum is 46.

The square root of 73738945 is about 8587.1383475521. The cubic root of 73738945 is about 419.3393714786.

The spelling of 73738945 in words is "seventy-three million, seven hundred thirty-eight thousand, nine hundred forty-five".