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12988963 = 137313687
BaseRepresentation
bin110001100011…
…001000100011
3220102220111201
4301203020203
511311121323
61142222031
7215255461
oct61431043
926386451
1012988963
117371889
124424917
1328ca1a0
141a21831
1512188ad
hexc63223

12988963 has 8 divisors (see below), whose sum is σ = 14180768. Its totient is φ = 11824704.

The previous prime is 12988957. The next prime is 12989017. The reversal of 12988963 is 36988921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12988963 - 25 = 12988931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12988363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5895 + ... + 7792.

It is an arithmetic number, because the mean of its divisors is an integer number (1772596).

Almost surely, 212988963 is an apocalyptic number.

12988963 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12988963 is a deficient number, since it is larger than the sum of its proper divisors (1191805).

12988963 is a wasteful number, since it uses less digits than its factorization.

12988963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13773.

The product of its digits is 186624, while the sum is 46.

The square root of 12988963 is about 3604.0203939490. The cubic root of 12988963 is about 235.0669071599.

The spelling of 12988963 in words is "twelve million, nine hundred eighty-eight thousand, nine hundred sixty-three".

Divisors: 1 13 73 949 13687 177931 999151 12988963