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2881124 = 22720281
BaseRepresentation
bin1010111111011001100100
312102101011022
422333121210
51214143444
6141430312
733326531
oct12773144
95371138
102881124
1116986a4
12b6b398
1379b50c
1454dd88
153bd9ee
hex2bf664

2881124 has 6 divisors (see below), whose sum is σ = 5041974. Its totient is φ = 1440560.

The previous prime is 2881117. The next prime is 2881127. The reversal of 2881124 is 4211882.

It can be written as a sum of positive squares in only one way, i.e., 2458624 + 422500 = 1568^2 + 650^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2881093 and 2881102.

It is not an unprimeable number, because it can be changed into a prime (2881127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360137 + ... + 360144.

It is an arithmetic number, because the mean of its divisors is an integer number (840329).

22881124 is an apocalyptic number.

It is an amenable number.

2881124 is a deficient number, since it is larger than the sum of its proper divisors (2160850).

2881124 is a wasteful number, since it uses less digits than its factorization.

2881124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720285 (or 720283 counting only the distinct ones).

The product of its digits is 1024, while the sum is 26.

The square root of 2881124 is about 1697.3874042186. The cubic root of 2881124 is about 142.2942387911.

The spelling of 2881124 in words is "two million, eight hundred eighty-one thousand, one hundred twenty-four".

Divisors: 1 2 4 720281 1440562 2881124