57289280 has 28 divisors (see below), whose sum is σ = 136420860. Its totient is φ = 22915584.

The previous prime is 57289279. The next prime is 57289289. The reversal of 57289280 is 8298275.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 44729344 + 12559936 = 6688^2 + 3544^2 .

It is not an unprimeable number, because it can be changed into a prime (57289289) 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, 89195 + ... + 89834.

Almost surely, 2^57289280 is an apocalyptic number.

It is an amenable number.

57289280 is an abundant number, since it is smaller than the sum of its proper divisors (79131580).

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

57289280 is a wasteful number, since it uses less digits than its factorization.

57289280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179046 (or 179036 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 57289280 is about 7568.9682255906. The cubic root of 57289280 is about 385.5000642060.

The spelling of 57289280 in words is "fifty-seven million, two hundred eighty-nine thousand, two hundred eighty".