Base | Representation |
---|---|
bin | 1000100111001… |
… | …00000000010000 |
3 | 12000221000122010 |
4 | 10103210000100 |
5 | 121443041242 |
6 | 11100142520 |
7 | 1535001465 |
oct | 423440020 |
9 | 160830563 |
10 | 72237072 |
11 | 37859866 |
12 | 20237a40 |
13 | 11c72b3b |
14 | 984566c |
15 | 651d89c |
hex | 44e4010 |
72237072 has 40 divisors (see below), whose sum is σ = 187193376. Its totient is φ = 24004096.
The previous prime is 72237013. The next prime is 72237079. The reversal of 72237072 is 27073227.
It is a super-2 number, since 2×722370722 = 10436389142266368, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (72237079) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14488 + ... + 18824.
Almost surely, 272237072 is an apocalyptic number.
It is an amenable number.
72237072 is an abundant number, since it is smaller than the sum of its proper divisors (114956304).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
72237072 is a wasteful number, since it uses less digits than its factorization.
72237072 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4695 (or 4689 counting only the distinct ones).
The product of its (nonzero) digits is 8232, while the sum is 30.
The square root of 72237072 is about 8499.2394953902. The cubic root of 72237072 is about 416.4728658908.
The spelling of 72237072 in words is "seventy-two million, two hundred thirty-seven thousand, seventy-two".
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