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2568375940 = 225139878369
BaseRepresentation
bin1001100100010110…
…0100111010000100
320121222212000102211
42121011210322010
520230001012230
61102505113204
7120434556334
oct23105447204
96558760384
102568375940
1110a8865949
125b8188804
1331c14c9a0
141a516d0c4
1510073542a
hex99164e84

2568375940 has 24 divisors (see below), whose sum is σ = 5808481560. Its totient is φ = 948323328.

The previous prime is 2568375899. The next prime is 2568375941. The reversal of 2568375940 is 495738652.

It can be written as a sum of positive squares in 4 ways, for example, as 538332804 + 2030043136 = 23202^2 + 45056^2 .

It is not an unprimeable number, because it can be changed into a prime (2568375941) 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 7 ways as a sum of consecutive naturals, for example, 4938925 + ... + 4939444.

It is an arithmetic number, because the mean of its divisors is an integer number (242020065).

Almost surely, 22568375940 is an apocalyptic number.

2568375940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2568375940 is an abundant number, since it is smaller than the sum of its proper divisors (3240105620).

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

2568375940 is a wasteful number, since it uses less digits than its factorization.

2568375940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9878391 (or 9878389 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 49.

The square root of 2568375940 is about 50679.1469936107. The cubic root of 2568375940 is about 1369.4710764797.

The spelling of 2568375940 in words is "two billion, five hundred sixty-eight million, three hundred seventy-five thousand, nine hundred forty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 9878369 19756738 39513476 49391845 98783690 128418797 197567380 256837594 513675188 642093985 1284187970 2568375940