57820628 has 6 divisors (see below), whose sum is σ = 101186106. Its totient is φ = 28910312.

The previous prime is 57820589. The next prime is 57820639. The reversal of 57820628 is 82602875.

57820628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 32398864 + 25421764 = 5692^2 + 5042^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57820591 and 57820600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7227575 + ... + 7227582.

It is an arithmetic number, because the mean of its divisors is an integer number (16864351).

Almost surely, 2^57820628 is an apocalyptic number.

It is an amenable number.

57820628 is a deficient number, since it is larger than the sum of its proper divisors (43365478).

57820628 is a wasteful number, since it uses less digits than its factorization.

57820628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14455161 (or 14455159 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 57820628 is about 7603.9876380752. The cubic root of 57820628 is about 386.6882135568.

The spelling of 57820628 in words is "fifty-seven million, eight hundred twenty thousand, six hundred twenty-eight".