74688384 has 64 divisors (see below), whose sum is σ = 201421440. Its totient is φ = 24516096.

The previous prime is 74688359. The next prime is 74688403. The reversal of 74688384 is 48388647.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24277 + ... + 27179.

It is an arithmetic number, because the mean of its divisors is an integer number (3147210).

Almost surely, 2^74688384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74688384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100710720).

74688384 is an abundant number, since it is smaller than the sum of its proper divisors (126733056).

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

74688384 is a wasteful number, since it uses less digits than its factorization.

74688384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2987 (or 2975 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 48.

The square root of 74688384 is about 8642.2441529964. The cubic root of 74688384 is about 421.1314616264.

The spelling of 74688384 in words is "seventy-four million, six hundred eighty-eight thousand, three hundred eighty-four".