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12304660 = 225615233
BaseRepresentation
bin101110111100…
…000100010100
3212011010211011
4232330010110
511122222120
61115422004
7206405434
oct56740424
925133734
1012304660
116a44745
124154904
13271a884
1418c42c4
151130c5a
hexbbc114

12304660 has 12 divisors (see below), whose sum is σ = 25839828. Its totient is φ = 4921856.

The previous prime is 12304657. The next prime is 12304703. The reversal of 12304660 is 6640321.

It can be written as a sum of positive squares in 2 ways, for example, as 6563844 + 5740816 = 2562^2 + 2396^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307597 + ... + 307636.

It is an arithmetic number, because the mean of its divisors is an integer number (2153319).

Almost surely, 212304660 is an apocalyptic number.

12304660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12304660 is an abundant number, since it is smaller than the sum of its proper divisors (13535168).

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

12304660 is a wasteful number, since it uses less digits than its factorization.

12304660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615242 (or 615240 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 12304660 is about 3507.7998802668. The cubic root of 12304660 is about 230.8641718180.

Adding to 12304660 its reverse (6640321), we get a palindrome (18944981).

The spelling of 12304660 in words is "twelve million, three hundred four thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 615233 1230466 2460932 3076165 6152330 12304660