74840128 has 28 divisors (see below), whose sum is σ = 162013392. Its totient is φ = 34017920.

The previous prime is 74840113. The next prime is 74840147. The reversal of 74840128 is 82104847.

It is a super-3 number, since 3×74840128³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74840093 and 74840102.

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, 52450 + ... + 53857.

Almost surely, 2^74840128 is an apocalyptic number.

It is an amenable number.

74840128 is an abundant number, since it is smaller than the sum of its proper divisors (87173264).

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

74840128 is a wasteful number, since it uses less digits than its factorization.

74840128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106330 (or 106320 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 74840128 is about 8651.0188995285. The cubic root of 74840128 is about 421.4164722262.

The spelling of 74840128 in words is "seventy-four million, eight hundred forty thousand, one hundred twenty-eight".