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12808452 = 2231067371
BaseRepresentation
bin110000110111…
…000100000100
3220002201220010
4300313010010
511234332302
61134310220
7213604266
oct60670404
926081803
1012808452
1172591a8
124358370
132865c87
1419b5b36
1511d016c
hexc37104

12808452 has 12 divisors (see below), whose sum is σ = 29886416. Its totient is φ = 4269480.

The previous prime is 12808387. The next prime is 12808469. The reversal of 12808452 is 25480821.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533674 + ... + 533697.

Almost surely, 212808452 is an apocalyptic number.

12808452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12808452 is an abundant number, since it is smaller than the sum of its proper divisors (17077964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12808452 is a wasteful number, since it uses less digits than its factorization.

12808452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067378 (or 1067376 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 12808452 is about 3578.8897719824. The cubic root of 12808452 is about 233.9728948077.

The spelling of 12808452 in words is "twelve million, eight hundred eight thousand, four hundred fifty-two".

Divisors: 1 2 3 4 6 12 1067371 2134742 3202113 4269484 6404226 12808452