Base | Representation |
---|---|
bin | 1000010111001… |
… | …10000001110000 |
3 | 11212222220020210 |
4 | 10023212001300 |
5 | 120424220313 |
6 | 10543304120 |
7 | 1511151504 |
oct | 413460160 |
9 | 155886223 |
10 | 70148208 |
11 | 36662429 |
12 | 1b5ab040 |
13 | 116c1120 |
14 | 9460304 |
15 | 62599c3 |
hex | 42e6070 |
70148208 has 80 divisors (see below), whose sum is σ = 197765120. Its totient is φ = 21295872.
The previous prime is 70148201. The next prime is 70148233. The reversal of 70148208 is 80284107.
It is a super-2 number, since 2×701482082 = 9841542171222528, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (70148201) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48585 + ... + 50007.
It is an arithmetic number, because the mean of its divisors is an integer number (2472064).
Almost surely, 270148208 is an apocalyptic number.
70148208 is a gapful number since it is divisible by the number (78) 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 70148208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98882560).
70148208 is an abundant number, since it is smaller than the sum of its proper divisors (127616912).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
70148208 is a wasteful number, since it uses less digits than its factorization.
70148208 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1526 (or 1520 counting only the distinct ones).
The product of its (nonzero) digits is 3584, while the sum is 30.
The square root of 70148208 is about 8375.4527041826. The cubic root of 70148208 is about 412.4191856376.
The spelling of 70148208 in words is "seventy million, one hundred forty-eight thousand, two hundred eight".
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