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12395903 = 138271153
BaseRepresentation
bin101111010010…
…010101111111
3212022202222112
4233102111333
511133132103
61121404235
7210235442
oct57222577
925282875
1012395903
116aa7253
12419967b
132750270
141909659
15114ccd8
hexbd257f

12395903 has 8 divisors (see below), whose sum is σ = 13377168. Its totient is φ = 11418624.

The previous prime is 12395891. The next prime is 12395917. The reversal of 12395903 is 30959321.

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

It is a cyclic number.

It is not a de Polignac number, because 12395903 - 212 = 12391807 is a prime.

It is a super-2 number, since 2×123959032 = 307316822370818, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12395903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12395983) 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, 10175 + ... + 11327.

It is an arithmetic number, because the mean of its divisors is an integer number (1672146).

Almost surely, 212395903 is an apocalyptic number.

12395903 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12395903 is a deficient number, since it is larger than the sum of its proper divisors (981265).

12395903 is a wasteful number, since it uses less digits than its factorization.

12395903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 12395903 is about 3520.7815893634. The cubic root of 12395903 is about 231.4334110549.

The spelling of 12395903 in words is "twelve million, three hundred ninety-five thousand, nine hundred three".

Divisors: 1 13 827 1153 10751 14989 953531 12395903