74139768 has 48 divisors (see below), whose sum is σ = 201853080. Its totient is φ = 24583104.

The previous prime is 74139763. The next prime is 74139797. The reversal of 74139768 is 86793147.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74139763) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11571 + ... + 16797.

Almost surely, 2^74139768 is an apocalyptic number.

It is an amenable number.

74139768 is an abundant number, since it is smaller than the sum of its proper divisors (127713312).

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

74139768 is a wasteful number, since it uses less digits than its factorization.

74139768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5436 (or 5429 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 74139768 is about 8610.4452846528. The cubic root of 74139768 is about 420.0978003539.

The spelling of 74139768 in words is "seventy-four million, one hundred thirty-nine thousand, seven hundred sixty-eight".