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244011220 = 225292571637
BaseRepresentation
bin11101000101101…
…01000011010100
3122000011001110121
432202311003110
5444431324340
640114001324
76022026655
oct1642650324
9560131417
10244011220
11115813272
1269876244
133b72684b
142459b52c
151664e94a
hexe8b50d4

244011220 has 48 divisors (see below), whose sum is σ = 532481040. Its totient is φ = 93814784.

The previous prime is 244011203. The next prime is 244011221. The reversal of 244011220 is 22110442.

It can be written as a sum of positive squares in 8 ways, for example, as 276676 + 243734544 = 526^2 + 15612^2 .

It is a junction number, because it is equal to n+sod(n) for n = 244011194 and 244011203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244011221) 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 15 ways as a sum of consecutive naturals, for example, 148242 + ... + 149878.

It is an arithmetic number, because the mean of its divisors is an integer number (11093355).

Almost surely, 2244011220 is an apocalyptic number.

244011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 244011220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266240520).

244011220 is an abundant number, since it is smaller than the sum of its proper divisors (288469820).

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

244011220 is a wasteful number, since it uses less digits than its factorization.

244011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932 (or 1930 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 244011220 is about 15620.8584911329. The cubic root of 244011220 is about 624.8895548842.

Adding to 244011220 its reverse (22110442), we get a palindrome (266121662).

The spelling of 244011220 in words is "two hundred forty-four million, eleven thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 29 58 116 145 257 290 514 580 1028 1285 1637 2570 3274 5140 6548 7453 8185 14906 16370 29812 32740 37265 47473 74530 94946 149060 189892 237365 420709 474730 841418 949460 1682836 2103545 4207090 8414180 12200561 24401122 48802244 61002805 122005610 244011220