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12803880 = 2335106699
BaseRepresentation
bin110000110101…
…111100101000
3220002111121210
4300311330220
511234211010
61134233120
7213555045
oct60657450
926074553
1012803880
117255821
1243557a0
132863b7b
1419b41cc
1511cdb20
hexc35f28

12803880 has 32 divisors (see below), whose sum is σ = 38412000. Its totient is φ = 3414336.

The previous prime is 12803867. The next prime is 12803897. The reversal of 12803880 is 8830821.

12803880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53230 + ... + 53469.

It is an arithmetic number, because the mean of its divisors is an integer number (1200375).

Almost surely, 212803880 is an apocalyptic number.

12803880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12803880 is an abundant number, since it is smaller than the sum of its proper divisors (25608120).

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

12803880 is a wasteful number, since it uses less digits than its factorization.

12803880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106713 (or 106709 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 12803880 is about 3578.2509693983. The cubic root of 12803880 is about 233.9450524793.

The spelling of 12803880 in words is "twelve million, eight hundred three thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 106699 213398 320097 426796 533495 640194 853592 1066990 1280388 1600485 2133980 2560776 3200970 4267960 6401940 12803880