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12804741 = 321422749
BaseRepresentation
bin110000110110…
…001010000101
3220002112210200
4300312022011
511234222431
61134241113
7213560415
oct60661205
926075720
1012804741
117256434
124356199
132864391
1419b4645
1511cdee6
hexc36285

12804741 has 6 divisors (see below), whose sum is σ = 18495750. Its totient is φ = 8536488.

The previous prime is 12804739. The next prime is 12804749. The reversal of 12804741 is 14740821.

It can be written as a sum of positive squares in only one way, i.e., 12047841 + 756900 = 3471^2 + 870^2 .

It is not a de Polignac number, because 12804741 - 21 = 12804739 is a prime.

It is a super-2 number, since 2×128047412 = 327922784154162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12804749) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 711366 + ... + 711383.

It is an arithmetic number, because the mean of its divisors is an integer number (3082625).

Almost surely, 212804741 is an apocalyptic number.

It is an amenable number.

12804741 is a deficient number, since it is larger than the sum of its proper divisors (5691009).

12804741 is a wasteful number, since it uses less digits than its factorization.

12804741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422755 (or 1422752 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 12804741 is about 3578.3712775507. The cubic root of 12804741 is about 233.9502962589.

The spelling of 12804741 in words is "twelve million, eight hundred four thousand, seven hundred forty-one".

Divisors: 1 3 9 1422749 4268247 12804741