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12980956 = 223245239
BaseRepresentation
bin110001100001…
…001011011100
3220102111112011
4301201023130
511310342311
61142121004
7215223232
oct61411334
926374464
1012980956
11736686a
124420164
1328c6651
141a1c952
151216321
hexc612dc

12980956 has 6 divisors (see below), whose sum is σ = 22716680. Its totient is φ = 6490476.

The previous prime is 12980939. The next prime is 12980963. The reversal of 12980956 is 65908921.

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 as a sum of consecutive naturals, namely, 1622616 + ... + 1622623.

Almost surely, 212980956 is an apocalyptic number.

It is an amenable number.

12980956 is a deficient number, since it is larger than the sum of its proper divisors (9735724).

12980956 is a wasteful number, since it uses less digits than its factorization.

12980956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3245243 (or 3245241 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 12980956 is about 3602.9093799317. The cubic root of 12980956 is about 235.0185951786.

The spelling of 12980956 in words is "twelve million, nine hundred eighty thousand, nine hundred fifty-six".

Divisors: 1 2 4 3245239 6490478 12980956