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12880899 = 321431211
BaseRepresentation
bin110001001000…
…110000000011
3220020102021100
4301020300003
511244142044
61140025443
7214325433
oct61106003
926212240
1012880899
1172a8679
124392283
13288cc45
1419d42c3
1511e6869
hexc48c03

12880899 has 6 divisors (see below), whose sum is σ = 18605756. Its totient is φ = 8587260.

The previous prime is 12880859. The next prime is 12880913. The reversal of 12880899 is 99808821.

It is not a de Polignac number, because 12880899 - 211 = 12878851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12880859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 715597 + ... + 715614.

Almost surely, 212880899 is an apocalyptic number.

12880899 is a deficient number, since it is larger than the sum of its proper divisors (5724857).

12880899 is a wasteful number, since it uses less digits than its factorization.

12880899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431217 (or 1431214 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The square root of 12880899 is about 3588.9969350781. The cubic root of 12880899 is about 234.4131971878.

The spelling of 12880899 in words is "twelve million, eight hundred eighty thousand, eight hundred ninety-nine".

Divisors: 1 3 9 1431211 4293633 12880899