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12730697 = 710317657
BaseRepresentation
bin110000100100…
…000101001001
3212221210020022
4300210011021
511224340242
61132510225
7213131510
oct60440511
925853208
1012730697
117205841
12431b375
132839775
141995677
1511b70d2
hexc24149

12730697 has 8 divisors (see below), whose sum is σ = 14691456. Its totient is φ = 10805472.

The previous prime is 12730691. The next prime is 12730717. The reversal of 12730697 is 79603721.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12730697 is a prime.

It is a super-2 number, since 2×127306972 = 324141292211618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12730691) 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, 8108 + ... + 9549.

It is an arithmetic number, because the mean of its divisors is an integer number (1836432).

Almost surely, 212730697 is an apocalyptic number.

It is an amenable number.

12730697 is a deficient number, since it is larger than the sum of its proper divisors (1960759).

12730697 is a wasteful number, since it uses less digits than its factorization.

12730697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17767.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 12730697 is about 3568.0102298060. The cubic root of 12730697 is about 233.4984814969.

The spelling of 12730697 in words is "twelve million, seven hundred thirty thousand, six hundred ninety-seven".

Divisors: 1 7 103 721 17657 123599 1818671 12730697