| Base | Representation |
|---|---|
| bin | 1000101011111… |
| … | …10001111011000 |
| 3 | 12002010010020100 |
| 4 | 10111332033120 |
| 5 | 122123300244 |
| 6 | 11121455400 |
| 7 | 1543242360 |
| oct | 425761730 |
| 9 | 162103210 |
| 10 | 72868824 |
| 11 | 38150476 |
| 12 | 204a1560 |
| 13 | 12134562 |
| 14 | 996b9a0 |
| 15 | 65e5b69 |
| hex | 457e3d8 |
72868824 has 96 divisors (see below), whose sum is σ = 227185920. Its totient is φ = 20668608.
The previous prime is 72868823. The next prime is 72868837. The reversal of 72868824 is 42886827.
It is a happy number.
It is a super-2 number, since 2×728688242 = 10619731022285952, which contains 22 as substring.
It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.
It is a nude number because it is divisible by every one of its digits.
It is a self number, because there is not a number n which added to its sum of digits gives 72868824.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (72868823) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81709 + ... + 82595.
It is an arithmetic number, because the mean of its divisors is an integer number (2366520).
Almost surely, 272868824 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 72868824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113592960).
72868824 is an abundant number, since it is smaller than the sum of its proper divisors (154317096).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
72868824 is a wasteful number, since it uses less digits than its factorization.
72868824 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1069 (or 1062 counting only the distinct ones).
The product of its digits is 344064, while the sum is 45.
The square root of 72868824 is about 8536.3237989195. The cubic root of 72868824 is about 417.6834366686.
It can be divided in two parts, 7286 and 8824, that added together give a triangular number (16110 = T179).
The spelling of 72868824 in words is "seventy-two million, eight hundred sixty-eight thousand, eight hundred twenty-four".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.108 sec. • engine limits •