Search a number
-
+
2890591 = 11262781
BaseRepresentation
bin1011000001101101011111
312102212010221
423001231133
51214444331
6141542211
733366244
oct13015537
95385127
102890591
1116a4820
12b74967
137a2912
145535cb
153c1711
hex2c1b5f

2890591 has 4 divisors (see below), whose sum is σ = 3153384. Its totient is φ = 2627800.

The previous prime is 2890583. The next prime is 2890597. The reversal of 2890591 is 1950982.

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

It is a cyclic number.

It is not a de Polignac number, because 2890591 - 23 = 2890583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2890597) 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 in 3 ways as a sum of consecutive naturals, for example, 131380 + ... + 131401.

It is an arithmetic number, because the mean of its divisors is an integer number (788346).

22890591 is an apocalyptic number.

2890591 is a deficient number, since it is larger than the sum of its proper divisors (262793).

2890591 is a wasteful number, since it uses less digits than its factorization.

2890591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262792.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 2890591 is about 1700.1738146437. The cubic root of 2890591 is about 142.4499218719.

It can be divided in two parts, 2890 and 591, that added together give a square (3481 = 592).

The spelling of 2890591 in words is "two million, eight hundred ninety thousand, five hundred ninety-one".

Divisors: 1 11 262781 2890591