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2128033 = 6173449
BaseRepresentation
bin1000000111100010100001
311000010010001
420013202201
51021044113
6113340001
724042115
oct10074241
94003101
102128033
111223906
12867601
135967bb
143d5745
152c07dd
hex2078a1

2128033 has 4 divisors (see below), whose sum is σ = 2132100. Its totient is φ = 2123968.

The previous prime is 2128031. The next prime is 2128039. The reversal of 2128033 is 3308212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31329 + 2096704 = 177^2 + 1448^2 .

It is a cyclic number.

It is not a de Polignac number, because 2128033 - 21 = 2128031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2128033.

It is not an unprimeable number, because it can be changed into a prime (2128031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1108 + ... + 2341.

It is an arithmetic number, because the mean of its divisors is an integer number (533025).

22128033 is an apocalyptic number.

It is an amenable number.

2128033 is a deficient number, since it is larger than the sum of its proper divisors (4067).

2128033 is an equidigital number, since it uses as much as digits as its factorization.

2128033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2128033 is about 1458.7779131862. Note that the first 3 decimals coincide. The cubic root of 2128033 is about 128.6252167067.

The spelling of 2128033 in words is "two million, one hundred twenty-eight thousand, thirty-three".

Divisors: 1 617 3449 2128033