74384 has 10 divisors (see below), whose sum is σ = 144150. Its totient is φ = 37184.

The previous prime is 74383. The next prime is 74411. The reversal of 74384 is 48347.

It can be written as a sum of positive squares in only one way, i.e., 73984 + 400 = 272^2 + 20^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2309 + ... + 2340.

It is an arithmetic number, because the mean of its divisors is an integer number (14415).

2⁷⁴³⁸⁴ is an apocalyptic number.

It is an amenable number.

74384 is a deficient number, since it is larger than the sum of its proper divisors (69766).

74384 is a wasteful number, since it uses less digits than its factorization.

74384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4657 (or 4651 counting only the distinct ones).

The product of its digits is 2688, while the sum is 26.

The square root of 74384 is about 272.7343029397. The cubic root of 74384 is about 42.0558591600.

The spelling of 74384 in words is "seventy-four thousand, three hundred eighty-four".