Base | Representation |
---|---|
bin | 1000010110101… |
… | …01000011011000 |
3 | 11212212100212200 |
4 | 10023111003120 |
5 | 120420004210 |
6 | 10542010200 |
7 | 1510442010 |
oct | 413250330 |
9 | 155770780 |
10 | 70078680 |
11 | 36615171 |
12 | 1b576960 |
13 | 11698599 |
14 | 9442c40 |
15 | 62440c0 |
hex | 42d50d8 |
70078680 has 96 divisors (see below), whose sum is σ = 260301600. Its totient is φ = 16017408.
The previous prime is 70078663. The next prime is 70078681. The reversal of 70078680 is 8687007.
It is a happy number.
It is a super-2 number, since 2×700786802 = 9822042781084800, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (70078681) 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 23 ways as a sum of consecutive naturals, for example, 11385 + ... + 16424.
It is an arithmetic number, because the mean of its divisors is an integer number (2711475).
Almost surely, 270078680 is an apocalyptic number.
70078680 is a gapful number since it is divisible by the number (70) formed by its first and last digit.
It is an amenable number.
70078680 is an abundant number, since it is smaller than the sum of its proper divisors (190222920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
70078680 is a wasteful number, since it uses less digits than its factorization.
70078680 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 27833 (or 27826 counting only the distinct ones).
The product of its (nonzero) digits is 18816, while the sum is 36.
The square root of 70078680 is about 8371.3009741617. The cubic root of 70078680 is about 412.2828829869.
The spelling of 70078680 in words is "seventy million, seventy-eight thousand, six hundred eighty".
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