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3285405880 = 235731125139
BaseRepresentation
bin1100001111010011…
…0101000010111000
322110222001220121021
43003310311002320
523212030442010
61302001352224
7144262326541
oct30364650270
98428056537
103285405880
111436587079
12778338674
13404872663
1423249b4c8
1514366d8da
hexc3d350b8

3285405880 has 32 divisors (see below), whose sum is σ = 7493432400. Its totient is φ = 1296158976.

The previous prime is 3285405869. The next prime is 3285405887. The reversal of 3285405880 is 885045823.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3285405887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559650 + ... + 565489.

Almost surely, 23285405880 is an apocalyptic number.

It is an amenable number.

3285405880 is an abundant number, since it is smaller than the sum of its proper divisors (4208026520).

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

3285405880 is a wasteful number, since it uses less digits than its factorization.

3285405880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125223 (or 1125219 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 43.

The square root of 3285405880 is about 57318.4602026258. The cubic root of 3285405880 is about 1486.6075816459.

The spelling of 3285405880 in words is "three billion, two hundred eighty-five million, four hundred five thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 73 146 292 365 584 730 1460 2920 1125139 2250278 4500556 5625695 9001112 11251390 22502780 45005560 82135147 164270294 328540588 410675735 657081176 821351470 1642702940 3285405880