73981344 has 24 divisors (see below), whose sum is σ = 194201280. Its totient is φ = 24660416.

The previous prime is 73981319. The next prime is 73981351. The reversal of 73981344 is 44318937.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385224 + ... + 385415.

It is an arithmetic number, because the mean of its divisors is an integer number (8091720).

Almost surely, 2^73981344 is an apocalyptic number.

It is an amenable number.

73981344 is an abundant number, since it is smaller than the sum of its proper divisors (120219936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73981344 is a wasteful number, since it uses less digits than its factorization.

73981344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770652 (or 770644 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 73981344 is about 8601.2408407159. The cubic root of 73981344 is about 419.7983612602.

The spelling of 73981344 in words is "seventy-three million, nine hundred eighty-one thousand, three hundred forty-four".