82402857 has 12 divisors (see below), whose sum is σ = 119758704. Its totient is φ = 54597240.

The previous prime is 82402847. The next prime is 82402883. The reversal of 82402857 is 75820428.

It is a happy number.

It is not a de Polignac number, because 82402857 - 2¹⁰ = 82401833 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (82402847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26619 + ... + 29552.

It is an arithmetic number, because the mean of its divisors is an integer number (9979892).

Almost surely, 2^82402857 is an apocalyptic number.

It is an amenable number.

82402857 is a deficient number, since it is larger than the sum of its proper divisors (37355847).

82402857 is a wasteful number, since it uses less digits than its factorization.

82402857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56340 (or 56337 counting only the distinct ones).

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

The square root of 82402857 is about 9077.6019410415. The cubic root of 82402857 is about 435.1584519863.

The spelling of 82402857 in words is "eighty-two million, four hundred two thousand, eight hundred fifty-seven".