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12938071 = 175771319
BaseRepresentation
bin110001010110…
…101101010111
3220100022200211
4301112231113
511303004241
61141150251
7214654216
oct61265527
926308624
1012938071
117337623
1243bb387
1328acc83
141a0b07d
151208781
hexc56b57

12938071 has 8 divisors (see below), whose sum is σ = 13733280. Its totient is φ = 12146688.

The previous prime is 12938053. The next prime is 12938077. The reversal of 12938071 is 17083921.

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 12938071 - 211 = 12936023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12938077) 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, 9150 + ... + 10468.

It is an arithmetic number, because the mean of its divisors is an integer number (1716660).

Almost surely, 212938071 is an apocalyptic number.

12938071 is a deficient number, since it is larger than the sum of its proper divisors (795209).

12938071 is a wasteful number, since it uses less digits than its factorization.

12938071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 12938071 is about 3596.9530160957. The cubic root of 12938071 is about 234.7595004478.

The spelling of 12938071 in words is "twelve million, nine hundred thirty-eight thousand, seventy-one".

Divisors: 1 17 577 1319 9809 22423 761063 12938071