Base | Representation |
---|---|
bin | 11011111101111100… |
… | …00101001000000110 |
3 | 1102202102120100220010 |
4 | 31332332011020012 |
5 | 221222331330110 |
6 | 10521533451050 |
7 | 1041042200262 |
oct | 157676051006 |
9 | 42672510803 |
10 | 15015105030 |
11 | 64056a9712 |
12 | 2ab0640a86 |
13 | 1553a07443 |
14 | a262370a2 |
15 | 5cd2ea020 |
hex | 37ef85206 |
15015105030 has 32 divisors (see below), whose sum is σ = 36039888864. Its totient is φ = 4003623936.
The previous prime is 15015105029. The next prime is 15015105031. The reversal of 15015105030 is 3050151051.
It is an interprime number because it is at equal distance from previous prime (15015105029) and next prime (15015105031).
It is a junction number, because it is equal to n+sod(n) for n = 15015104988 and 15015105006.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (15015105031) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387624 + ... + 424596.
It is an arithmetic number, because the mean of its divisors is an integer number (1126246527).
Almost surely, 215015105030 is an apocalyptic number.
15015105030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
15015105030 is an abundant number, since it is smaller than the sum of its proper divisors (21024783834).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
15015105030 is a wasteful number, since it uses less digits than its factorization.
15015105030 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 50520.
The product of its (nonzero) digits is 375, while the sum is 21.
Adding to 15015105030 its reverse (3050151051), we get a palindrome (18065256081).
The spelling of 15015105030 in words is "fifteen billion, fifteen million, one hundred five thousand, thirty".
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