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2028127 = 11531759
BaseRepresentation
bin111101111001001011111
310211001001211
413233021133
51004400002
6111245251
723144623
oct7571137
93731054
102028127
111165842
12819827
1356019a
143ab183
152a0dd7
hex1ef25f

2028127 has 4 divisors (see below), whose sum is σ = 2031040. Its totient is φ = 2025216.

The previous prime is 2028121. The next prime is 2028137. The reversal of 2028127 is 7218202.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7218202 = 23609101.

It is a cyclic number.

It is not a de Polignac number, because 2028127 - 23 = 2028119 is a prime.

It is a super-2 number, since 2×20281272 = 8226598256258, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2028098 and 2028107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028121) 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, 274 + ... + 2032.

It is an arithmetic number, because the mean of its divisors is an integer number (507760).

22028127 is an apocalyptic number.

2028127 is a deficient number, since it is larger than the sum of its proper divisors (2913).

2028127 is a wasteful number, since it uses less digits than its factorization.

2028127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2912.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 2028127 is about 1424.1232390492. The cubic root of 2028127 is about 126.5799876359.

The spelling of 2028127 in words is "two million, twenty-eight thousand, one hundred twenty-seven".

Divisors: 1 1153 1759 2028127