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57230208 = 2732747151
BaseRepresentation
bin1101101001010…
…0001110000000
310222200121002100
43122110032000
5104122331313
65402350400
71263306630
oct332241600
9128617070
1057230208
112a3399a2
12171bb400
13bb1a339
14785a6c0
155057173
hex3694380

57230208 has 192 divisors, whose sum is σ = 193489920. Its totient is φ = 15897600.

The previous prime is 57230203. The next prime is 57230213. The reversal of 57230208 is 80203275.

It is an interprime number because it is at equal distance from previous prime (57230203) and next prime (57230213).

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57230203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 378933 + ... + 379083.

It is an arithmetic number, because the mean of its divisors is an integer number (1007760).

Almost surely, 257230208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57230208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96744960).

57230208 is an abundant number, since it is smaller than the sum of its proper divisors (136259712).

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

57230208 is a wasteful number, since it uses less digits than its factorization.

57230208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 57230208 is about 7565.0649699788. The cubic root of 57230208 is about 385.3675199717.

The spelling of 57230208 in words is "fifty-seven million, two hundred thirty thousand, two hundred eight".