82428057 has 8 divisors (see below), whose sum is σ = 122115680. Its totient is φ = 54952020.

The previous prime is 82428043. The next prime is 82428077. The reversal of 82428057 is 75082428.

It is a happy number.

It is not a de Polignac number, because 82428057 - 2⁴ = 82428041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82428077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1526419 + ... + 1526472.

It is an arithmetic number, because the mean of its divisors is an integer number (15264460).

Almost surely, 2^82428057 is an apocalyptic number.

It is an amenable number.

82428057 is a deficient number, since it is larger than the sum of its proper divisors (39687623).

82428057 is a wasteful number, since it uses less digits than its factorization.

82428057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3052900 (or 3052894 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 82428057 is about 9078.9898667198. The cubic root of 82428057 is about 435.2028067402.

The spelling of 82428057 in words is "eighty-two million, four hundred twenty-eight thousand, fifty-seven".