Search a number
-
+
2130469 = 11193679
BaseRepresentation
bin1000001000001000100101
311000020110021
420020020211
51021133334
6113355141
724052165
oct10101045
94006407
102130469
111225720
12868ab1
13597943
143d65a5
152c13b4
hex208225

2130469 has 4 divisors (see below), whose sum is σ = 2324160. Its totient is φ = 1936780.

The previous prime is 2130461. The next prime is 2130473. The reversal of 2130469 is 9640312.

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 2130469 - 23 = 2130461 is a prime.

It is a super-2 number, since 2×21304692 = 9077796319922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130461) 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, 96829 + ... + 96850.

It is an arithmetic number, because the mean of its divisors is an integer number (581040).

22130469 is an apocalyptic number.

It is an amenable number.

2130469 is a deficient number, since it is larger than the sum of its proper divisors (193691).

2130469 is a wasteful number, since it uses less digits than its factorization.

2130469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193690.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 2130469 is about 1459.6126198413. The cubic root of 2130469 is about 128.6742779047.

The spelling of 2130469 in words is "two million, one hundred thirty thousand, four hundred sixty-nine".

Divisors: 1 11 193679 2130469