[go: up one dir, main page]

Search a number
-
+
649060 = 225172383
BaseRepresentation
bin10011110011101100100
31012222100021
42132131210
5131232220
621524524
75342206
oct2363544
91188307
10649060
11403715
12273744
13199579
1412c776
15cc4aa
hex9e764

649060 has 48 divisors (see below), whose sum is σ = 1524096. Its totient is φ = 230912.

The previous prime is 649039. The next prime is 649063. The reversal of 649060 is 60946.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (649063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7779 + ... + 7861.

It is an arithmetic number, because the mean of its divisors is an integer number (31752).

2649060 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (762048).

649060 is an abundant number, since it is smaller than the sum of its proper divisors (875036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649060 is a wasteful number, since it uses less digits than its factorization.

649060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 130 counting only the distinct ones).

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

The square root of 649060 is about 805.6426006611. The cubic root of 649060 is about 86.5821332217.

The spelling of 649060 in words is "six hundred forty-nine thousand, sixty".

Divisors: 1 2 4 5 10 17 20 23 34 46 68 83 85 92 115 166 170 230 332 340 391 415 460 782 830 1411 1564 1660 1909 1955 2822 3818 3910 5644 7055 7636 7820 9545 14110 19090 28220 32453 38180 64906 129812 162265 324530 649060