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12898080 = 2532513253
BaseRepresentation
bin110001001100…
…111100100000
3220021021211200
4301030330200
511300214310
61140241200
7214426506
oct61147440
926237750
1012898080
11730a578
1243a0200
132897a00
1419da676
1511eb9c0
hexc4cf20

12898080 has 216 divisors, whose sum is σ = 48560148. Its totient is φ = 3115008.

The previous prime is 12898063. The next prime is 12898091. The reversal of 12898080 is 8089821.

It can be written as a sum of positive squares in 6 ways, for example, as 2322576 + 10575504 = 1524^2 + 3252^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 243334 + ... + 243386.

Almost surely, 212898080 is an apocalyptic number.

12898080 is a gapful number since it is divisible by the number (10) 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 12898080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24280074).

12898080 is an abundant number, since it is smaller than the sum of its proper divisors (35662068).

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

12898080 is a wasteful number, since it uses less digits than its factorization.

12898080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 12898080 is about 3591.3897031651. The cubic root of 12898080 is about 234.5173737626.

The spelling of 12898080 in words is "twelve million, eight hundred ninety-eight thousand, eighty".