| Base | Representation |
|---|---|
| bin | 11100111101101110… |
| … | …11001000001011100 |
| 3 | 1111010201111010222000 |
| 4 | 32132313121001130 |
| 5 | 223321324104203 |
| 6 | 11051011122300 |
| 7 | 1060230465306 |
| oct | 163667310134 |
| 9 | 44121433860 |
| 10 | 15550222428 |
| 11 | 665a7712a4 |
| 12 | 301b8a3390 |
| 13 | 160a836860 |
| 14 | a77330976 |
| 15 | 61029d4a3 |
| hex | 39edd905c |
15550222428 has 192 divisors, whose sum is σ = 44520537600. Its totient is φ = 4664424960.
The previous prime is 15550222427. The next prime is 15550222433. The reversal of 15550222428 is 82422205551.
15550222428 is a `hidden beast` number, since 1 + 5 + 5 + 5 + 0 + 222 + 428 = 666.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 15550222392 and 15550222401.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (15550222427) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10850800 + ... + 10852232.
It is an arithmetic number, because the mean of its divisors is an integer number (231877800).
Almost surely, 215550222428 is an apocalyptic number.
15550222428 is a gapful number since it is divisible by the number (18) 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 15550222428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22260268800).
15550222428 is an abundant number, since it is smaller than the sum of its proper divisors (28970315172).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
15550222428 is a wasteful number, since it uses less digits than its factorization.
15550222428 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1649 (or 1641 counting only the distinct ones).
The product of its (nonzero) digits is 64000, while the sum is 36.
Adding to 15550222428 its reverse (82422205551), we get a palindrome (97972427979).
The spelling of 15550222428 in words is "fifteen billion, five hundred fifty million, two hundred twenty-two thousand, four hundred twenty-eight".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.070 sec. • engine limits •