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12988448 = 251136899
BaseRepresentation
bin110001100011…
…000000100000
3220102212210122
4301203000200
511311112243
61142215412
7215254124
oct61430040
926385718
1012988448
117371460
124424568
1328c9b95
141a21584
151218668
hexc63020

12988448 has 24 divisors (see below), whose sum is σ = 27896400. Its totient is φ = 5903680.

The previous prime is 12988447. The next prime is 12988483. The reversal of 12988448 is 84488921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 12988399 and 12988408.

It is not an unprimeable number, because it can be changed into a prime (12988447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18098 + ... + 18801.

It is an arithmetic number, because the mean of its divisors is an integer number (1162350).

Almost surely, 212988448 is an apocalyptic number.

It is an amenable number.

12988448 is an abundant number, since it is smaller than the sum of its proper divisors (14907952).

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

12988448 is a wasteful number, since it uses less digits than its factorization.

12988448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36920 (or 36912 counting only the distinct ones).

The product of its digits is 147456, while the sum is 44.

The square root of 12988448 is about 3603.9489452544. The cubic root of 12988448 is about 235.0638003926.

The spelling of 12988448 in words is "twelve million, nine hundred eighty-eight thousand, four hundred forty-eight".

Divisors: 1 2 4 8 11 16 22 32 44 88 176 352 36899 73798 147596 295192 405889 590384 811778 1180768 1623556 3247112 6494224 12988448