74378256 has 20 divisors (see below), whose sum is σ = 192143952. Its totient is φ = 24792736.

The previous prime is 74378237. The next prime is 74378287. The reversal of 74378256 is 65287347.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774726 + ... + 774821.

Almost surely, 2^74378256 is an apocalyptic number.

It is an amenable number.

74378256 is an abundant number, since it is smaller than the sum of its proper divisors (117765696).

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

74378256 is a wasteful number, since it uses less digits than its factorization.

74378256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549558 (or 1549552 counting only the distinct ones).

The product of its digits is 282240, while the sum is 42.

The square root of 74378256 is about 8624.2829267134. The cubic root of 74378256 is about 420.5477660160.

Subtracting from 74378256 its reverse (65287347), we obtain a palindrome (9090909).

The spelling of 74378256 in words is "seventy-four million, three hundred seventy-eight thousand, two hundred fifty-six".