Base | Representation |
---|---|
bin | 11011111101111100… |
… | …00101000111011100 |
3 | 1102202102120100211120 |
4 | 31332332011013130 |
5 | 221222331324423 |
6 | 10521533450540 |
7 | 1041042200202 |
oct | 157676050734 |
9 | 42672510746 |
10 | 15015104988 |
11 | 64056a9684 |
12 | 2ab0640a50 |
13 | 1553a07410 |
14 | a26237072 |
15 | 5cd2e9ee3 |
hex | 37ef851dc |
15015104988 has 96 divisors (see below), whose sum is σ = 38164041216. Its totient is φ = 4567110912.
The previous prime is 15015104983. The next prime is 15015105029. The reversal of 15015104988 is 88940151051.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (15015104983) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13736970 + ... + 13738062.
It is an arithmetic number, because the mean of its divisors is an integer number (397542096).
Almost surely, 215015104988 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 15015104988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19082020608).
15015104988 is an abundant number, since it is smaller than the sum of its proper divisors (23148936228).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
15015104988 is a wasteful number, since it uses less digits than its factorization.
15015104988 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2043 (or 2041 counting only the distinct ones).
The product of its (nonzero) digits is 57600, while the sum is 42.
The spelling of 15015104988 in words is "fifteen billion, fifteen million, one hundred four thousand, nine hundred eighty-eight".
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