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12107797 = 135317573
BaseRepresentation
bin101110001100…
…000000010101
3211210010202221
4232030000111
511044422142
61111302341
7204625462
oct56140025
924703687
1012107797
11691a849
12407a9b1
13267c0a0
141872669
1510e2767
hexb8c015

12107797 has 8 divisors (see below), whose sum is σ = 13285944. Its totient is φ = 10964928.

The previous prime is 12107789. The next prime is 12107839. The reversal of 12107797 is 79770121.

It can be written as a sum of positive squares in 4 ways, for example, as 1957201 + 10150596 = 1399^2 + 3186^2 .

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

It is not a de Polignac number, because 12107797 - 23 = 12107789 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 (12107737) 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, 8098 + ... + 9475.

It is an arithmetic number, because the mean of its divisors is an integer number (1660743).

Almost surely, 212107797 is an apocalyptic number.

It is an amenable number.

12107797 is a deficient number, since it is larger than the sum of its proper divisors (1178147).

12107797 is a wasteful number, since it uses less digits than its factorization.

12107797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17639.

The product of its (nonzero) digits is 6174, while the sum is 34.

The square root of 12107797 is about 3479.6259856485. The cubic root of 12107797 is about 229.6263435094.

The spelling of 12107797 in words is "twelve million, one hundred seven thousand, seven hundred ninety-seven".

Divisors: 1 13 53 689 17573 228449 931369 12107797