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12938807 = 710118301
BaseRepresentation
bin110001010110…
…111000110111
3220100100201002
4301112320313
511303020212
61141153515
7214656320
oct61267067
926310632
1012938807
117338132
1243bb89b
1328b03cb
141a0b447
151208ac2
hexc56e37

12938807 has 8 divisors (see below), whose sum is σ = 14934432. Its totient is φ = 10980000.

The previous prime is 12938803. The next prime is 12938813. The reversal of 12938807 is 70883921.

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 12938807 - 22 = 12938803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12938801) 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, 8444 + ... + 9857.

It is an arithmetic number, because the mean of its divisors is an integer number (1866804).

Almost surely, 212938807 is an apocalyptic number.

12938807 is a deficient number, since it is larger than the sum of its proper divisors (1995625).

12938807 is a wasteful number, since it uses less digits than its factorization.

12938807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18409.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 12938807 is about 3597.0553234556. The cubic root of 12938807 is about 234.7639519026.

The spelling of 12938807 in words is "twelve million, nine hundred thirty-eight thousand, eight hundred seven".

Divisors: 1 7 101 707 18301 128107 1848401 12938807