| Base | Representation |
|---|---|
| bin | 11100010100011101… |
| … | …10100011000000000 |
| 3 | 1110020121002101000120 |
| 4 | 32022032310120000 |
| 5 | 222114213322430 |
| 6 | 10552403220240 |
| 7 | 1045525140522 |
| oct | 161216643000 |
| 9 | 43217071016 |
| 10 | 15204042240 |
| 11 | 64a2315a72 |
| 12 | 2b43977680 |
| 13 | 1583bba1ca |
| 14 | a43379a12 |
| 15 | 5debbb610 |
| hex | 38a3b4600 |
15204042240 has 160 divisors (see below), whose sum is σ = 49291773696. Its totient is φ = 3997163520.
The previous prime is 15204042239. The next prime is 15204042241. The reversal of 15204042240 is 4224040251.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (15204042239) and next prime (15204042241).
It is a tau number, because it is divible by the number of its divisors (160).
It is a Harshad number since it is a multiple of its sum of digits (24).
It is a self number, because there is not a number n which added to its sum of digits gives 15204042240.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (15204042241) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 531339 + ... + 559221.
Almost surely, 215204042240 is an apocalyptic number.
15204042240 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 15204042240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24645886848).
15204042240 is an abundant number, since it is smaller than the sum of its proper divisors (34087731456).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
15204042240 is an equidigital number, since it uses as much as digits as its factorization.
15204042240 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 27980 (or 27964 counting only the distinct ones).
The product of its (nonzero) digits is 2560, while the sum is 24.
Adding to 15204042240 its reverse (4224040251), we get a palindrome (19428082491).
The spelling of 15204042240 in words is "fifteen billion, two hundred four million, forty-two thousand, two hundred forty".
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