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12980847 = 3113112689
BaseRepresentation
bin110001100001…
…001001101111
3220102111101010
4301201021233
511310341342
61142120303
7215223015
oct61411157
926374333
1012980847
117366780
124420093
1328c6599
141a1c8b5
15121629c
hexc6126f

12980847 has 16 divisors (see below), whose sum is σ = 19491840. Its totient is φ = 7612800.

The previous prime is 12980837. The next prime is 12980873. The reversal of 12980847 is 74808921.

12980847 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12980847 - 26 = 12980783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12980837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5322 + ... + 7367.

It is an arithmetic number, because the mean of its divisors is an integer number (1218240).

Almost surely, 212980847 is an apocalyptic number.

12980847 is a deficient number, since it is larger than the sum of its proper divisors (6510993).

12980847 is a wasteful number, since it uses less digits than its factorization.

12980847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12734.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 12980847 is about 3602.8942532359. The cubic root of 12980847 is about 235.0179373663.

The spelling of 12980847 in words is "twelve million, nine hundred eighty thousand, eight hundred forty-seven".

Divisors: 1 3 11 31 33 93 341 1023 12689 38067 139579 393359 418737 1180077 4326949 12980847