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12159080 = 2351717881
BaseRepresentation
bin101110011000…
…100001101000
3211212202010022
4232120201220
511103042310
61112340012
7205231133
oct56304150
924782108
1012159080
11695532a
1240a4608
13269952b
14188721a
151102a55
hexb98868

12159080 has 32 divisors (see below), whose sum is σ = 28968840. Its totient is φ = 4577280.

The previous prime is 12159079. The next prime is 12159109. The reversal of 12159080 is 8095121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10484644 + 1674436 = 3238^2 + 1294^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8261 + ... + 9620.

Almost surely, 212159080 is an apocalyptic number.

12159080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12159080 is an abundant number, since it is smaller than the sum of its proper divisors (16809760).

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

12159080 is a wasteful number, since it uses less digits than its factorization.

12159080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17909 (or 17905 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 12159080 is about 3486.9872382904. The cubic root of 12159080 is about 229.9500836855.

The spelling of 12159080 in words is "twelve million, one hundred fifty-nine thousand, eighty".

Divisors: 1 2 4 5 8 10 17 20 34 40 68 85 136 170 340 680 17881 35762 71524 89405 143048 178810 303977 357620 607954 715240 1215908 1519885 2431816 3039770 6079540 12159080