Base | Representation |
---|---|
bin | 1000011101000… |
… | …00001100010100 |
3 | 11221102122020201 |
4 | 10032200030110 |
5 | 121123120430 |
6 | 11011510244 |
7 | 1520505565 |
oct | 416401424 |
9 | 157378221 |
10 | 70910740 |
11 | 3703331a |
12 | 1b8b8384 |
13 | 118ca224 |
14 | 95bc16c |
15 | 635a8ca |
hex | 43a0314 |
70910740 has 48 divisors (see below), whose sum is σ = 159887952. Its totient is φ = 26320896.
The previous prime is 70910737. The next prime is 70910747. The reversal of 70910740 is 4701907.
It can be written as a sum of positive squares in 8 ways, for example, as 2782224 + 68128516 = 1668^2 + 8254^2 .
It is a junction number, because it is equal to n+sod(n) for n = 70910699 and 70910708.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (70910747) 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, 23392 + ... + 26248.
It is an arithmetic number, because the mean of its divisors is an integer number (3330999).
Almost surely, 270910740 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 70910740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79943976).
70910740 is an abundant number, since it is smaller than the sum of its proper divisors (88977212).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
70910740 is a wasteful number, since it uses less digits than its factorization.
70910740 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2956 (or 2954 counting only the distinct ones).
The product of its (nonzero) digits is 1764, while the sum is 28.
The square root of 70910740 is about 8420.8515008875. The cubic root of 70910740 is about 413.9081766374.
It can be divided in two parts, 709 and 10740, that added together give a square (11449 = 1072).
The spelling of 70910740 in words is "seventy million, nine hundred ten thousand, seven hundred forty".
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