74388940 has 48 divisors (see below), whose sum is σ = 166156704. Its totient is φ = 27878400.

The previous prime is 74388929. The next prime is 74388943. The reversal of 74388940 is 4988347.

It is not an unprimeable number, because it can be changed into a prime (74388943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112210 + ... + 112870.

It is an arithmetic number, because the mean of its divisors is an integer number (3461598).

Almost surely, 2^74388940 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 74388940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83078352).

74388940 is an abundant number, since it is smaller than the sum of its proper divisors (91767764).

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

74388940 is a wasteful number, since it uses less digits than its factorization.

74388940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018 (or 1016 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 74388940 is about 8624.9023182874. The cubic root of 74388940 is about 420.5679014581.

The spelling of 74388940 in words is "seventy-four million, three hundred eighty-eight thousand, nine hundred forty".