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2130889 = 21110099
BaseRepresentation
bin1000001000001111001001
311000021000211
420020033021
51021142024
6113401121
724053335
oct10101711
94007024
102130889
111225a72
128691a1
13597ba7
143d67c5
152c1594
hex2083c9

2130889 has 4 divisors (see below), whose sum is σ = 2141200. Its totient is φ = 2120580.

The previous prime is 2130857. The next prime is 2130901. The reversal of 2130889 is 9880312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2130889 - 25 = 2130857 is a prime.

It is an Ulam number.

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 2130889.

It is not an unprimeable number, because it can be changed into a prime (2130809) 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, 4839 + ... + 5260.

It is an arithmetic number, because the mean of its divisors is an integer number (535300).

22130889 is an apocalyptic number.

It is an amenable number.

2130889 is a deficient number, since it is larger than the sum of its proper divisors (10311).

2130889 is a wasteful number, since it uses less digits than its factorization.

2130889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10310.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 2130889 is about 1459.7564865415. The cubic root of 2130889 is about 128.6827329516.

The spelling of 2130889 in words is "two million, one hundred thirty thousand, eight hundred eighty-nine".

Divisors: 1 211 10099 2130889