82474247428 has 12 divisors (see below), whose sum is σ = 147053139660. Its totient is φ = 40459064672.

The previous prime is 82474247417. The next prime is 82474247431.

It is a happy number.

82474247428 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 62301158404 + 20173089024 = 249602^2 + 142032^2 .

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, 194514523 + ... + 194514946.

It is an arithmetic number, because the mean of its divisors is an integer number (12254428305).

Almost surely, 2^82474247428 is an apocalyptic number.

It is an amenable number.

82474247428 is a deficient number, since it is larger than the sum of its proper divisors (64578892232).

82474247428 is a wasteful number, since it uses less digits than its factorization.

82474247428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389029526 (or 389029524 counting only the distinct ones).

The product of its digits is 6422528, while the sum is 52.

The spelling of 82474247428 in words is "eighty-two billion, four hundred seventy-four million, two hundred forty-seven thousand, four hundred twenty-eight".