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57189200 = 2452142973
BaseRepresentation
bin1101101000101…
…0001101010000
310222121111211112
43122022031100
5104120023300
65401432452
71263046235
oct332121520
9128544745
1057189200
112a311102
121719b728
13bb04783
14784978c
155049e35
hex368a350

57189200 has 30 divisors (see below), whose sum is σ = 137398014. Its totient is φ = 22875520.

The previous prime is 57189199. The next prime is 57189211. The reversal of 57189200 is 298175.

It can be written as a sum of positive squares in 3 ways, for example, as 12138256 + 45050944 = 3484^2 + 6712^2 .

It is a congruent number.

It is an unprimeable 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 in 5 ways as a sum of consecutive naturals, for example, 71087 + ... + 71886.

Almost surely, 257189200 is an apocalyptic number.

57189200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

57189200 is an abundant number, since it is smaller than the sum of its proper divisors (80208814).

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

57189200 is a wasteful number, since it uses less digits than its factorization.

57189200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142991 (or 142980 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 57189200 is about 7562.3541308246. The cubic root of 57189200 is about 385.2754536320.

The spelling of 57189200 in words is "fifty-seven million, one hundred eighty-nine thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 80 100 200 400 142973 285946 571892 714865 1143784 1429730 2287568 2859460 3574325 5718920 7148650 11437840 14297300 28594600 57189200