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1206136970 = 25292173829
BaseRepresentation
bin100011111100100…
…0011000010001010
310010001120002212122
41013321003002022
54432232340340
6315403411242
741613665213
oct10771030212
93101502778
101206136970
11569918615
12297b23b22
13162b6291c
14b628a40a
1570d4ddb5
hex47e4308a

1206136970 has 48 divisors (see below), whose sum is σ = 2264216760. Its totient is φ = 462567168.

The previous prime is 1206136969. The next prime is 1206136991. The reversal of 1206136970 is 796316021.

It can be written as a sum of positive squares in 12 ways, for example, as 411968209 + 794168761 = 20297^2 + 28181^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1206136970.

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 23 ways as a sum of consecutive naturals, for example, 1454516 + ... + 1455344.

Almost surely, 21206136970 is an apocalyptic number.

1206136970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1206136970 is a deficient number, since it is larger than the sum of its proper divisors (1058079790).

1206136970 is a wasteful number, since it uses less digits than its factorization.

1206136970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 1206136970 is about 34729.4827200176. The cubic root of 1206136970 is about 1064.4670186105.

The spelling of 1206136970 in words is "one billion, two hundred six million, one hundred thirty-six thousand, nine hundred seventy".

Divisors: 1 2 5 10 29 58 145 173 290 346 829 841 865 1658 1682 1730 4145 4205 5017 8290 8410 10034 24041 25085 48082 50170 120205 143417 145493 240410 286834 290986 697189 717085 727465 1394378 1434170 1454930 3485945 4159093 6971890 8318186 20795465 41590930 120613697 241227394 603068485 1206136970