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12980172 = 2231081681
BaseRepresentation
bin110001100000…
…111111001100
3220102110110010
4301200333030
511310331142
61142113220
7215221032
oct61407714
926373403
1012980172
117366217
12441b810
1328c619a
141a1c552
151215e9c
hexc60fcc

12980172 has 12 divisors (see below), whose sum is σ = 30287096. Its totient is φ = 4326720.

The previous prime is 12980153. The next prime is 12980183. The reversal of 12980172 is 27108921.

12980172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a zygodrome in base 2.

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, 540829 + ... + 540852.

Almost surely, 212980172 is an apocalyptic number.

12980172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12980172 is an abundant number, since it is smaller than the sum of its proper divisors (17306924).

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

12980172 is a wasteful number, since it uses less digits than its factorization.

12980172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081688 (or 1081686 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 12980172 is about 3602.8005773287. The cubic root of 12980172 is about 235.0138636758.

The spelling of 12980172 in words is "twelve million, nine hundred eighty thousand, one hundred seventy-two".

Divisors: 1 2 3 4 6 12 1081681 2163362 3245043 4326724 6490086 12980172