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12281485 = 513731789
BaseRepresentation
bin101110110110…
…011010001101
3212002222000211
4232312122031
511121001420
61115122421
7206251036
oct56663215
925088024
1012281485
116a29297
124143411
132710168
1418b9a8d
151128e5a
hexbb668d

12281485 has 8 divisors (see below), whose sum is σ = 14756760. Its totient is φ = 9812544.

The previous prime is 12281483. The next prime is 12281519. The reversal of 12281485 is 58418221.

It can be written as a sum of positive squares in 4 ways, for example, as 7946761 + 4334724 = 2819^2 + 2082^2 .

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 12281485 - 21 = 12281483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12281483) 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, 5971 + ... + 7759.

It is an arithmetic number, because the mean of its divisors is an integer number (1844595).

Almost surely, 212281485 is an apocalyptic number.

It is an amenable number.

12281485 is a deficient number, since it is larger than the sum of its proper divisors (2475275).

12281485 is a wasteful number, since it uses less digits than its factorization.

12281485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3167.

The product of its digits is 5120, while the sum is 31.

The square root of 12281485 is about 3504.4949707483. The cubic root of 12281485 is about 230.7191416787.

The spelling of 12281485 in words is "twelve million, two hundred eighty-one thousand, four hundred eighty-five".

Divisors: 1 5 1373 1789 6865 8945 2456297 12281485