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11444240 = 245143053
BaseRepresentation
bin101011101010…
…000000010000
3210112102112202
4223222000100
510412203430
61045142332
7166163063
oct53520020
923472482
1011444240
116507255
1239ba9a8
1324a9052
14173c8da
151010d45
hexaea010

11444240 has 20 divisors (see below), whose sum is σ = 26608044. Its totient is φ = 4577664.

The previous prime is 11444197. The next prime is 11444263. The reversal of 11444240 is 4244411.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8832784 + 2611456 = 2972^2 + 1616^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71447 + ... + 71606.

Almost surely, 211444240 is an apocalyptic number.

11444240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11444240 is an abundant number, since it is smaller than the sum of its proper divisors (15163804).

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

11444240 is a wasteful number, since it uses less digits than its factorization.

11444240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143066 (or 143060 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 11444240 is about 3382.9336381313. The cubic root of 11444240 is about 225.3524681376.

Adding to 11444240 its reverse (4244411), we get a palindrome (15688651).

The spelling of 11444240 in words is "eleven million, four hundred forty-four thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 143053 286106 572212 715265 1144424 1430530 2288848 2861060 5722120 11444240