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2678885 = 51153919
BaseRepresentation
bin1010001110000001100101
312001002201222
422032001211
51141211020
6133230125
731525106
oct12160145
95032658
102678885
11156a760
12a92345
1372a451
144da3ad
1537db25
hex28e065

2678885 has 16 divisors (see below), whose sum is σ = 3576960. Its totient is φ = 1909440.

The previous prime is 2678873. The next prime is 2678887. The reversal of 2678885 is 5888762.

It is not a de Polignac number, because 2678885 - 28 = 2678629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2456 + ... + 3374.

It is an arithmetic number, because the mean of its divisors is an integer number (223560).

22678885 is an apocalyptic number.

It is an amenable number.

2678885 is a deficient number, since it is larger than the sum of its proper divisors (898075).

2678885 is a wasteful number, since it uses less digits than its factorization.

2678885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988.

The product of its digits is 215040, while the sum is 44.

The square root of 2678885 is about 1636.7299716202. The cubic root of 2678885 is about 138.8837252006.

The spelling of 2678885 in words is "two million, six hundred seventy-eight thousand, eight hundred eighty-five".

Divisors: 1 5 11 53 55 265 583 919 2915 4595 10109 48707 50545 243535 535777 2678885