| Base | Representation |
|---|---|
| bin | 1000010110101… |
| … | …01110110100100 |
| 3 | 11212212112101000 |
| 4 | 10023111312210 |
| 5 | 120420110311 |
| 6 | 10542033300 |
| 7 | 1510454400 |
| oct | 413256644 |
| 9 | 155775330 |
| 10 | 70081956 |
| 11 | 3661767a |
| 12 | 1b578830 |
| 13 | 11699c19 |
| 14 | 9444100 |
| 15 | 6245056 |
| hex | 42d5da4 |
70081956 has 288 divisors, whose sum is σ = 241315200. Its totient is φ = 17418240.
The previous prime is 70081909. The next prime is 70082003. The reversal of 70081956 is 65918007.
It is an interprime number because it is at equal distance from previous prime (70081909) and next prime (70082003).
It is a super-2 number, since 2×700819562 = 9822961113571872, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a nialpdrome in base 14.
It is a self number, because there is not a number n which added to its sum of digits gives 70081956.
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 95 ways as a sum of consecutive naturals, for example, 1709296 + ... + 1709336.
It is an arithmetic number, because the mean of its divisors is an integer number (837900).
Almost surely, 270081956 is an apocalyptic number.
70081956 is a gapful number since it is divisible by the number (76) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 70081956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120657600).
70081956 is an abundant number, since it is smaller than the sum of its proper divisors (171233244).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
70081956 is a wasteful number, since it uses less digits than its factorization.
70081956 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 104 (or 89 counting only the distinct ones).
The product of its (nonzero) digits is 15120, while the sum is 36.
The square root of 70081956 is about 8371.4966403864. The cubic root of 70081956 is about 412.2893072788.
The spelling of 70081956 in words is "seventy million, eighty-one thousand, nine hundred fifty-six".
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