Search a number
BaseRepresentation
bin1101111101111000
32220110211
431331320
53312313
61120504
7325534
oct157570
986424
1057208
1139a88
1229134
1320068
1416bc4
1511e3d
hexdf78

57208 has 8 divisors (see below), whose sum is σ = 107280. Its totient is φ = 28600.

The previous prime is 57203. The next prime is 57221. The reversal of 57208 is 80275.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57203) by changing a digit.

57208 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 3568 + ... + 3583.

It is an arithmetic number, because the mean of its divisors is an integer number (13410).

257208 is an apocalyptic number.

It is an amenable number.

57208 is a deficient number, since it is larger than the sum of its proper divisors (50072).

57208 is a wasteful number, since it uses less digits than its factorization.

57208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7157 (or 7153 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 57208 is about 239.1819391175. The cubic root of 57208 is about 38.5317666643.

The spelling of 57208 in words is "fifty-seven thousand, two hundred eight".

Divisors: 1 2 4 8 7151 14302 28604 57208