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12999168 = 293271331
BaseRepresentation
bin110001100101…
…101000000000
3220110102111200
4301211220000
511311433133
61142341200
7215330310
oct61455000
926412450
1012999168
117379516
12442a800
132901a20
141a25440
15121b913
hexc65a00

12999168 has 240 divisors, whose sum is σ = 47663616. Its totient is φ = 3317760.

The previous prime is 12999157. The next prime is 12999179. The reversal of 12999168 is 86199921.

It is an interprime number because it is at equal distance from previous prime (12999157) and next prime (12999179).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 419313 + ... + 419343.

Almost surely, 212999168 is an apocalyptic number.

12999168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12999168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23831808).

12999168 is an abundant number, since it is smaller than the sum of its proper divisors (34664448).

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

12999168 is a wasteful number, since it uses less digits than its factorization.

12999168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 56 counting only the distinct ones).

The product of its digits is 69984, while the sum is 45.

The square root of 12999168 is about 3605.4358959771. The cubic root of 12999168 is about 235.1284524844.

It can be divided in two parts, 129991 and 68, that multiplied together give a palindrome (8839388).

The spelling of 12999168 in words is "twelve million, nine hundred ninety-nine thousand, one hundred sixty-eight".