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70955808 = 25371129331
BaseRepresentation
bin1000011101010…
…11001100100000
311221111221001220
410032223030200
5121131041213
611012455040
71521054150
oct416531440
9157457056
1070955808
1137064170
121b91a480
13119148b1
1495d0760
156368e23
hex43ab320

70955808 has 192 divisors, whose sum is σ = 240952320. Its totient is φ = 17740800.

The previous prime is 70955771. The next prime is 70955809. The reversal of 70955808 is 80855907.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 70955808.

It is not an unprimeable number, because it can be changed into a prime (70955809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 214203 + ... + 214533.

It is an arithmetic number, because the mean of its divisors is an integer number (1254960).

Almost surely, 270955808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70955808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120476160).

70955808 is an abundant number, since it is smaller than the sum of its proper divisors (169996512).

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

70955808 is a wasteful number, since it uses less digits than its factorization.

70955808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 42.

The square root of 70955808 is about 8423.5270522507. The cubic root of 70955808 is about 413.9958458357.

Subtracting 70955808 from its reverse (80855907), we obtain a palindrome (9900099).

The spelling of 70955808 in words is "seventy million, nine hundred fifty-five thousand, eight hundred eight".