Base | Representation |
---|---|
bin | 100100001100111100… |
… | …111110111110100100 |
3 | 10201100001120011020221 |
4 | 210030330332332210 |
5 | 1114102214100402 |
6 | 25505122134124 |
7 | 2544166465012 |
oct | 441474767644 |
9 | 121301504227 |
10 | 38872018852 |
11 | 15538272117 |
12 | 764a1b1344 |
13 | 38864857b4 |
14 | 1c4a8678b2 |
15 | 1027975337 |
hex | 90cf3efa4 |
38872018852 has 24 divisors (see below), whose sum is σ = 70323386112. Its totient is φ = 18781461600.
The previous prime is 38872018849. The next prime is 38872018853. The reversal of 38872018852 is 25881027883.
It is a super-2 number, since 2×388720188522 (a number of 22 digits) contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 38872018852.
It is not an unprimeable number, because it can be changed into a prime (38872018853) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144799 + ... + 314182.
It is an arithmetic number, because the mean of its divisors is an integer number (2930141088).
Almost surely, 238872018852 is an apocalyptic number.
It is an amenable number.
38872018852 is a deficient number, since it is larger than the sum of its proper divisors (31451367260).
38872018852 is a wasteful number, since it uses less digits than its factorization.
38872018852 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 459699 (or 459697 counting only the distinct ones).
The product of its (nonzero) digits is 1720320, while the sum is 52.
The spelling of 38872018852 in words is "thirty-eight billion, eight hundred seventy-two million, eighteen thousand, eight hundred fifty-two".
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