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12880275 = 352199863
BaseRepresentation
bin110001001000…
…100110010011
3220020101102020
4301020212103
511244132100
61140022523
7214323552
oct61104623
926211366
1012880275
1172a8161
124391a43
13288c885
1419d3d99
1511e65a0
hexc48993

12880275 has 24 divisors (see below), whose sum is σ = 21427200. Its totient is φ = 6827040.

The previous prime is 12880267. The next prime is 12880277. The reversal of 12880275 is 57208821.

It is not a de Polignac number, because 12880275 - 23 = 12880267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12880277) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14494 + ... + 15356.

It is an arithmetic number, because the mean of its divisors is an integer number (892800).

Almost surely, 212880275 is an apocalyptic number.

12880275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12880275 is a deficient number, since it is larger than the sum of its proper divisors (8546925).

12880275 is a wasteful number, since it uses less digits than its factorization.

12880275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075 (or 1070 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 12880275 is about 3588.9100016579. The cubic root of 12880275 is about 234.4094118362.

The spelling of 12880275 in words is "twelve million, eight hundred eighty thousand, two hundred seventy-five".

Divisors: 1 3 5 15 25 75 199 597 863 995 2589 2985 4315 4975 12945 14925 21575 64725 171737 515211 858685 2576055 4293425 12880275