Base | Representation |
---|---|
bin | 1101101000110… |
… | …1001100000000 |
3 | 10222122010120200 |
4 | 3122031030000 |
5 | 104120421113 |
6 | 5402005200 |
7 | 1263126645 |
oct | 332151400 |
9 | 128563520 |
10 | 57201408 |
11 | 2a31a2a0 |
12 | 171a6800 |
13 | bb0a1b4 |
14 | 784ddcc |
15 | 504d873 |
hex | 368d300 |
57201408 has 216 divisors, whose sum is σ = 187810896. Its totient is φ = 16588800.
The previous prime is 57201407. The next prime is 57201409. The reversal of 57201408 is 80410275.
57201408 is a `hidden beast` number, since 57 + 201 + 408 = 666.
It is an interprime number because it is at equal distance from previous prime (57201407) and next prime (57201409).
It is not an unprimeable number, because it can be changed into a prime (57201401) 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, 937698 + ... + 937758.
It is a vampire number, since it can be written as 7104 ⋅ 8052 (with its own digits).
Almost surely, 257201408 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 57201408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93905448).
57201408 is an abundant number, since it is smaller than the sum of its proper divisors (130609488).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
57201408 is a wasteful number, since it uses less digits than its factorization.
57201408 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 131 (or 114 counting only the distinct ones).
The product of its (nonzero) digits is 2240, while the sum is 27.
The square root of 57201408 is about 7563.1612438186. The cubic root of 57201408 is about 385.3028661977.
The spelling of 57201408 in words is "fifty-seven million, two hundred one thousand, four hundred eight".
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