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2212430240 = 25513827689
BaseRepresentation
bin1000001111011111…
…0000000110100000
312201012002002201202
42003313300012200
514012340231430
61003312020332
7105553226636
oct20367600640
95635062652
102212430240
11a3594a649
12518b316a8
13293494427
1416db95356
15ce374d45
hex83df01a0

2212430240 has 24 divisors (see below), whose sum is σ = 5226866820. Its totient is φ = 884972032.

The previous prime is 2212430239. The next prime is 2212430257. The reversal of 2212430240 is 420342122.

It can be written as a sum of positive squares in 2 ways, for example, as 2212385296 + 44944 = 47036^2 + 212^2 .

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

It is an unprimeable number.

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, 6913685 + ... + 6914004.

Almost surely, 22212430240 is an apocalyptic number.

2212430240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212430240 is an abundant number, since it is smaller than the sum of its proper divisors (3014436580).

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

2212430240 is a wasteful number, since it uses less digits than its factorization.

2212430240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13827704 (or 13827696 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2212430240 is about 47036.4777592881. The cubic root of 2212430240 is about 1303.0363424934.

Adding to 2212430240 its reverse (420342122), we get a palindrome (2632772362).

The spelling of 2212430240 in words is "two billion, two hundred twelve million, four hundred thirty thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 13827689 27655378 55310756 69138445 110621512 138276890 221243024 276553780 442486048 553107560 1106215120 2212430240