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204048440 = 2355101211
BaseRepresentation
bin11000010100110…
…00100000111000
3112012221201211122
430022120200320
5404214022230
632125244412
75025245261
oct1412304070
9465851748
10204048440
11a51a8682
1258403708
1333373c2b
141d157968
1512da8be5
hexc298838

204048440 has 16 divisors (see below), whose sum is σ = 459109080. Its totient is φ = 81619360.

The previous prime is 204048421. The next prime is 204048443. The reversal of 204048440 is 44840402.

It is a super-3 number, since 3×2040484403 (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204048443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2550566 + ... + 2550645.

Almost surely, 2204048440 is an apocalyptic number.

204048440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204048440 is an abundant number, since it is smaller than the sum of its proper divisors (255060640).

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

204048440 is a wasteful number, since it uses less digits than its factorization.

204048440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5101222 (or 5101218 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

The square root of 204048440 is about 14284.5524956157. The cubic root of 204048440 is about 588.7231219408.

Adding to 204048440 its reverse (44840402), we get a palindrome (248888842).

The spelling of 204048440 in words is "two hundred four million, forty-eight thousand, four hundred forty".

Divisors: 1 2 4 5 8 10 20 40 5101211 10202422 20404844 25506055 40809688 51012110 102024220 204048440