57071828 has 18 divisors (see below), whose sum is σ = 109781658. Its totient is φ = 25941520.

The previous prime is 57071827. The next prime is 57071843. The reversal of 57071828 is 82817075.

It can be written as a sum of positive squares in only one way, i.e., 47720464 + 9351364 = 6908^2 + 3058^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57071791 and 57071800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57071827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58475 + ... + 59442.

It is an arithmetic number, because the mean of its divisors is an integer number (6098981).

Almost surely, 2^57071828 is an apocalyptic number.

It is an amenable number.

57071828 is a deficient number, since it is larger than the sum of its proper divisors (52709830).

57071828 is a wasteful number, since it uses less digits than its factorization.

57071828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117943 (or 117930 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 57071828 is about 7554.5898631229. The cubic root of 57071828 is about 385.0117003247.

The spelling of 57071828 in words is "fifty-seven million, seventy-one thousand, eight hundred twenty-eight".