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12804479 = 372711277
BaseRepresentation
bin110000110110…
…000101111111
3220002112102222
4300312011333
511234220404
61134235555
7213556562
oct60660577
926075388
1012804479
117256216
124355bbb
13286421c
1419b44d9
1511cddbe
hexc3617f

12804479 has 8 divisors (see below), whose sum is σ = 13209408. Its totient is φ = 12402720.

The previous prime is 12804443. The next prime is 12804481. The reversal of 12804479 is 97440821.

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 12804479 - 220 = 11755903 is a prime.

It is a super-2 number, since 2×128044792 = 327909364922882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12804439) 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, 9389 + ... + 10665.

It is an arithmetic number, because the mean of its divisors is an integer number (1651176).

Almost surely, 212804479 is an apocalyptic number.

12804479 is a deficient number, since it is larger than the sum of its proper divisors (404929).

12804479 is a wasteful number, since it uses less digits than its factorization.

12804479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 12804479 is about 3578.3346685295. The cubic root of 12804479 is about 233.9487006157.

The spelling of 12804479 in words is "twelve million, eight hundred four thousand, four hundred seventy-nine".

Divisors: 1 37 271 1277 10027 47249 346067 12804479