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12998480 = 2451114771
BaseRepresentation
bin110001100101…
…011101010000
3220110101120012
4301211131100
511311422410
61142334052
7215325305
oct61453520
926411505
1012998480
117378a50
12442a328
132901611
141a250ac
15121b605
hexc65750

12998480 has 40 divisors (see below), whose sum is σ = 32971104. Its totient is φ = 4726400.

The previous prime is 12998471. The next prime is 12998483. The reversal of 12998480 is 8489921.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12998483) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 6506 + ... + 8265.

Almost surely, 212998480 is an apocalyptic number.

12998480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12998480 is an abundant number, since it is smaller than the sum of its proper divisors (19972624).

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

12998480 is a wasteful number, since it uses less digits than its factorization.

12998480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14795 (or 14789 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 12998480 is about 3605.3404832276. The cubic root of 12998480 is about 235.1243042387.

It can be divided in two parts, 1299 and 8480, that added together give a palindrome (9779).

The spelling of 12998480 in words is "twelve million, nine hundred ninety-eight thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 11 16 20 22 40 44 55 80 88 110 176 220 440 880 14771 29542 59084 73855 118168 147710 162481 236336 295420 324962 590840 649924 812405 1181680 1299848 1624810 2599696 3249620 6499240 12998480