74384740 has 24 divisors (see below), whose sum is σ = 158542272. Its totient is φ = 29309280.

The previous prime is 74384731. The next prime is 74384747. The reversal of 74384740 is 4748347.

It is a happy number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 74384740.

It is not an unprimeable number, because it can be changed into a prime (74384747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26416 + ... + 29095.

It is an arithmetic number, because the mean of its divisors is an integer number (6605928).

Almost surely, 2^74384740 is an apocalyptic number.

It is an amenable number.

74384740 is an abundant number, since it is smaller than the sum of its proper divisors (84157532).

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

74384740 is a wasteful number, since it uses less digits than its factorization.

74384740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55587 (or 55585 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 74384740 is about 8624.6588338322. The cubic root of 74384740 is about 420.5599862204.

The spelling of 74384740 in words is "seventy-four million, three hundred eighty-four thousand, seven hundred forty".