Base | Representation |
---|---|
bin | 11100010101100010… |
… | …11111001000000010 |
3 | 1110021020012002102020 |
4 | 32022301133020002 |
5 | 222124030131432 |
6 | 10553330102310 |
7 | 1045665321252 |
oct | 161261371002 |
9 | 43236162366 |
10 | 15213130242 |
11 | 64a7462a12 |
12 | 2b46a1a996 |
13 | 1585a4c91b |
14 | a44663962 |
15 | 5e08b422c |
hex | 38ac5f202 |
15213130242 has 16 divisors (see below), whose sum is σ = 31475442240. Its totient is φ = 4896179792.
The previous prime is 15213130241. The next prime is 15213130249. The reversal of 15213130242 is 24203131251.
It is not an unprimeable number, because it can be changed into a prime (15213130241) 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, 43715718 + ... + 43716065.
It is an arithmetic number, because the mean of its divisors is an integer number (1967215140).
Almost surely, 215213130242 is an apocalyptic number.
15213130242 is an abundant number, since it is smaller than the sum of its proper divisors (16262311998).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
15213130242 is a wasteful number, since it uses less digits than its factorization.
15213130242 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 87431817.
The product of its (nonzero) digits is 1440, while the sum is 24.
Adding to 15213130242 its reverse (24203131251), we get a palindrome (39416261493).
The spelling of 15213130242 in words is "fifteen billion, two hundred thirteen million, one hundred thirty thousand, two hundred forty-two".
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