57284658 has 80 divisors (see below), whose sum is σ = 139043520. Its totient is φ = 17565984.

The previous prime is 57284653. The next prime is 57284659. The reversal of 57284658 is 85648275.

It is not an unprimeable number, because it can be changed into a prime (57284653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 113635 + ... + 114137.

It is an arithmetic number, because the mean of its divisors is an integer number (1738044).

Almost surely, 2^57284658 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57284658, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69521760).

57284658 is an abundant number, since it is smaller than the sum of its proper divisors (81758862).

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

57284658 is a wasteful number, since it uses less digits than its factorization.

57284658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573 (or 564 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 57284658 is about 7568.6628938010. The cubic root of 57284658 is about 385.4896967677.

The spelling of 57284658 in words is "fifty-seven million, two hundred eighty-four thousand, six hundred fifty-eight".