74256147 has 12 divisors (see below), whose sum is σ = 122581680. Its totient is φ = 42432048.

The previous prime is 74256139. The next prime is 74256157. The reversal of 74256147 is 74165247.

It is not a de Polignac number, because 74256147 - 2³ = 74256139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74256107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 589272 + ... + 589397.

It is an arithmetic number, because the mean of its divisors is an integer number (10215140).

Almost surely, 2^74256147 is an apocalyptic number.

74256147 is a deficient number, since it is larger than the sum of its proper divisors (48325533).

74256147 is a wasteful number, since it uses less digits than its factorization.

74256147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178682 (or 1178679 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 74256147 is about 8617.2006475421. The cubic root of 74256147 is about 420.3174980229.

The spelling of 74256147 in words is "seventy-four million, two hundred fifty-six thousand, one hundred forty-seven".