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807869980 = 22540393499
BaseRepresentation
bin110000001001110…
…001111000011100
32002022011001021101
4300021301320130
53123303314410
6212055242444
726006532031
oct6011617034
92068131241
10807869980
11385026745
121a6679424
13cb4aa098
1479417388
154adcdd3a
hex30271e1c

807869980 has 12 divisors (see below), whose sum is σ = 1696527000. Its totient is φ = 323147984.

The previous prime is 807869977. The next prime is 807869983. The reversal of 807869980 is 89968708.

It is an interprime number because it is at equal distance from previous prime (807869977) and next prime (807869983).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (807869983) 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 3 ways as a sum of consecutive naturals, for example, 20196730 + ... + 20196769.

It is an arithmetic number, because the mean of its divisors is an integer number (141377250).

Almost surely, 2807869980 is an apocalyptic number.

It is an amenable number.

807869980 is an abundant number, since it is smaller than the sum of its proper divisors (888657020).

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

807869980 is a wasteful number, since it uses less digits than its factorization.

807869980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40393508 (or 40393506 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 55.

The square root of 807869980 is about 28423.0536712718. The cubic root of 807869980 is about 931.3519397738.

The spelling of 807869980 in words is "eight hundred seven million, eight hundred sixty-nine thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 40393499 80786998 161573996 201967495 403934990 807869980