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807904071 = 33136913331
BaseRepresentation
bin110000001001111…
…010001101000111
32002022012210001000
4300021322031013
53123310412241
6212100104343
726010033312
oct6011721507
92068183030
10807904071
1138504a317
121a66950b3
13cb4bc760
1479425979
154add8eb6
hex3027a347

807904071 has 32 divisors (see below), whose sum is σ = 1291216640. Its totient is φ = 496303200.

The previous prime is 807904063. The next prime is 807904079. The reversal of 807904071 is 170409708.

It is an interprime number because it is at equal distance from previous prime (807904063) and next prime (807904079).

It is not a de Polignac number, because 807904071 - 23 = 807904063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (807904079) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240876 + ... + 244206.

It is an arithmetic number, because the mean of its divisors is an integer number (40350520).

Almost surely, 2807904071 is an apocalyptic number.

807904071 is a deficient number, since it is larger than the sum of its proper divisors (483312569).

807904071 is a wasteful number, since it uses less digits than its factorization.

807904071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4044 (or 4038 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 807904071 is about 28423.6533717958. The cubic root of 807904071 is about 931.3650401791.

The spelling of 807904071 in words is "eight hundred seven million, nine hundred four thousand, seventy-one".

Divisors: 1 3 9 13 27 39 117 351 691 2073 3331 6219 8983 9993 18657 26949 29979 43303 80847 89937 129909 242541 389727 1169181 2301721 6905163 20715489 29922373 62146467 89767119 269301357 807904071