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12000057 = 38348193
BaseRepresentation
bin101101110001…
…101100111001
3211120122222120
4231301230321
511033000212
61105111453
7203666406
oct55615471
924518876
1012000057
116856903
124028589
132642034
1418452ad
1510c088c
hexb71b39

12000057 has 8 divisors (see below), whose sum is σ = 16193184. Its totient is φ = 7903488.

The previous prime is 12000029. The next prime is 12000073. The reversal of 12000057 is 75000021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12000057 - 27 = 11999929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12000017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23848 + ... + 24345.

It is an arithmetic number, because the mean of its divisors is an integer number (2024148).

Almost surely, 212000057 is an apocalyptic number.

It is an amenable number.

12000057 is a deficient number, since it is larger than the sum of its proper divisors (4193127).

12000057 is an equidigital number, since it uses as much as digits as its factorization.

12000057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48279.

The product of its (nonzero) digits is 70, while the sum is 15.

The square root of 12000057 is about 3464.1098423693. The cubic root of 12000057 is about 228.9432110029.

Adding to 12000057 its reverse (75000021), we get a palindrome (87000078).

The spelling of 12000057 in words is "twelve million, fifty-seven", and thus it is an aban number and an uban number.

Divisors: 1 3 83 249 48193 144579 4000019 12000057