Base | Representation |
---|---|
bin | 110011011111… |
… | …111001100000 |
3 | 221101212112000 |
4 | 303133321200 |
5 | 11424000000 |
6 | 1201204000 |
7 | 222514413 |
oct | 63377140 |
9 | 27355460 |
10 | 13500000 |
11 | 7690828 |
12 | 4630600 |
13 | 2a48987 |
14 | 1b15b7a |
15 | 12ba000 |
hex | cdfe60 |
13500000 has 168 divisors, whose sum is σ = 49218120. Its totient is φ = 3600000.
The previous prime is 13499999. The next prime is 13500007. The reversal of 13500000 is 531.
It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13500007) by changing a digit.
It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2699998 + ... + 2700002.
It is an arithmetic number, because the mean of its divisors is an integer number (292965).
Almost surely, 213500000 is an apocalyptic number.
13500000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 13500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24609060).
13500000 is an abundant number, since it is smaller than the sum of its proper divisors (35718120).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13500000 is an frugal number, since it uses more digits than its factorization.
13500000 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 49 (or 10 counting only the distinct ones).
The product of its (nonzero) digits is 15, while the sum is 9.
The square root of 13500000 is about 3674.2346141748. The cubic root of 13500000 is about 238.1101577952.
Adding to 13500000 its reverse (531), we get a palindrome (13500531).
The spelling of 13500000 in words is "thirteen million, five hundred thousand".
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