Base | Representation |
---|---|
bin | 1000011011101… |
… | …11001100000000 |
3 | 11221010002212010 |
4 | 10031313030000 |
5 | 121102232114 |
6 | 11004132520 |
7 | 1516206120 |
oct | 415671400 |
9 | 157102763 |
10 | 70742784 |
11 | 36a29112 |
12 | 1b837140 |
13 | 1186b948 |
14 | 9576c80 |
15 | 6325c59 |
hex | 4377300 |
70742784 has 72 divisors (see below), whose sum is σ = 215192320. Its totient is φ = 20210688.
The previous prime is 70742759. The next prime is 70742801. The reversal of 70742784 is 48724707.
It is a congruent number.
It is an unprimeable number.
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 7 ways as a sum of consecutive naturals, for example, 1204 + ... + 11955.
Almost surely, 270742784 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 70742784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107596160).
70742784 is an abundant number, since it is smaller than the sum of its proper divisors (144449536).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
70742784 is a wasteful number, since it uses less digits than its factorization.
70742784 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 13185 (or 13171 counting only the distinct ones).
The product of its (nonzero) digits is 87808, while the sum is 39.
The square root of 70742784 is about 8410.8729630164. The cubic root of 70742784 is about 413.5811301746.
The spelling of 70742784 in words is "seventy million, seven hundred forty-two thousand, seven hundred eighty-four".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.001 sec. • engine limits •