57821682 has 8 divisors (see below), whose sum is σ = 115643376. Its totient is φ = 19273892.

The previous prime is 57821681. The next prime is 57821683. The reversal of 57821682 is 28612875.

It is an interprime number because it is at equal distance from previous prime (57821681) and next prime (57821683).

It is a sphenic number, since it is the product of 3 distinct primes.

57821682 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 57821682.

It is not an unprimeable number, because it can be changed into a prime (57821681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4818468 + ... + 4818479.

It is an arithmetic number, because the mean of its divisors is an integer number (14455422).

Almost surely, 2^57821682 is an apocalyptic number.

57821682 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57821682 is a wasteful number, since it uses less digits than its factorization.

57821682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9636952.

The product of its digits is 53760, while the sum is 39.

The square root of 57821682 is about 7604.0569435006. The cubic root of 57821682 is about 386.6905631618.

The spelling of 57821682 in words is "fifty-seven million, eight hundred twenty-one thousand, six hundred eighty-two".