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2128833 = 32733791
BaseRepresentation
bin1000000111101111000001
311000011012200
420013233001
51021110313
6113343413
724044340
oct10075701
94004180
102128833
111224473
12867b69
13596c85
143d5b57
152c0b73
hex207bc1

2128833 has 12 divisors (see below), whose sum is σ = 3514368. Its totient is φ = 1216440.

The previous prime is 2128831. The next prime is 2128837. The reversal of 2128833 is 3388212.

It is not a de Polignac number, because 2128833 - 21 = 2128831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2128797 and 2128806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16833 + ... + 16958.

It is an arithmetic number, because the mean of its divisors is an integer number (292864).

22128833 is an apocalyptic number.

It is an amenable number.

2128833 is a deficient number, since it is larger than the sum of its proper divisors (1385535).

2128833 is a wasteful number, since it uses less digits than its factorization.

2128833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33804 (or 33801 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 2128833 is about 1459.0520895431. The cubic root of 2128833 is about 128.6413328856.

It can be divided in two parts, 21288 and 33, that added together give a triangular number (21321 = T206).

The spelling of 2128833 in words is "two million, one hundred twenty-eight thousand, eight hundred thirty-three".

Divisors: 1 3 7 9 21 63 33791 101373 236537 304119 709611 2128833