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3280815930 = 235715622933
BaseRepresentation
bin1100001110001101…
…0100011100111010
322110122102201101010
43003203110130322
523204342102210
61301315134350
7144205322010
oct30343243472
98418381333
103280815930
111433a31627
127768a43b6
13403926402
14231a248b0
15143063920
hexc38d473a

3280815930 has 32 divisors (see below), whose sum is σ = 8998809984. Its totient is φ = 749900736.

The previous prime is 3280815929. The next prime is 3280815943. The reversal of 3280815930 is 395180823.

3280815930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7811257 + ... + 7811676.

It is an arithmetic number, because the mean of its divisors is an integer number (281212812).

Almost surely, 23280815930 is an apocalyptic number.

3280815930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3280815930 is an abundant number, since it is smaller than the sum of its proper divisors (5717994054).

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

3280815930 is a wasteful number, since it uses less digits than its factorization.

3280815930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15622950.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 3280815930 is about 57278.4071880495. The cubic root of 3280815930 is about 1485.9149595055.

The spelling of 3280815930 in words is "three billion, two hundred eighty million, eight hundred fifteen thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 15622933 31245866 46868799 78114665 93737598 109360531 156229330 218721062 234343995 328081593 468687990 546802655 656163186 1093605310 1640407965 3280815930