74282828247 has 16 divisors (see below), whose sum is σ = 111138228960. Its totient is φ = 49031568000.

The previous prime is 74282828239. The next prime is 74282828281.

It is a happy number.

74282828247 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 74282828247 - 2³ = 74282828239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74282828193 and 74282828202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74282808247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13617154 + ... + 13622607.

It is an arithmetic number, because the mean of its divisors is an integer number (6946139310).

Almost surely, 2^74282828247 is an apocalyptic number.

74282828247 is a deficient number, since it is larger than the sum of its proper divisors (36855400713).

74282828247 is a wasteful number, since it uses less digits than its factorization.

74282828247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27239871 (or 27239865 counting only the distinct ones).

The product of its digits is 6422528, while the sum is 54.

It can be divided in two parts, 7428282 and 8247, that added together give a square (7436529 = 2727²).

The spelling of 74282828247 in words is "seventy-four billion, two hundred eighty-two million, eight hundred twenty-eight thousand, two hundred forty-seven".