| Base | Representation |
|---|---|
| bin | 101110010110101… |
| … | …1011100011101100 |
| 3 | 11000101210011211100 |
| 4 | 1130231123203230 |
| 5 | 11141141210403 |
| 6 | 414201523100 |
| 7 | 53354536305 |
| oct | 13455334354 |
| 9 | 4011704740 |
| 10 | 1555413228 |
| 11 | 728a98a86 |
| 12 | 374aa3490 |
| 13 | 1ba324575 |
| 14 | 10a8097ac |
| 15 | 918432a3 |
| hex | 5cb5b8ec |
1555413228 has 72 divisors (see below), whose sum is σ = 4038325200. Its totient is φ = 504483840.
The previous prime is 1555413221. The next prime is 1555413239. The reversal of 1555413228 is 8223145551.
1555413228 is a `hidden beast` number, since 15 + 5 + 5 + 413 + 228 = 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 = 1555413192 and 1555413201.
It is not an unprimeable number, because it can be changed into a prime (1555413221) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 661551 + ... + 663897.
It is an arithmetic number, because the mean of its divisors is an integer number (56087850).
Almost surely, 21555413228 is an apocalyptic number.
1555413228 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 1555413228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2019162600).
1555413228 is an abundant number, since it is smaller than the sum of its proper divisors (2482911972).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1555413228 is a wasteful number, since it uses less digits than its factorization.
1555413228 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2847 (or 2842 counting only the distinct ones).
The product of its digits is 48000, while the sum is 36.
The square root of 1555413228 is about 39438.7275149693. The cubic root of 1555413228 is about 1158.6402090480.
Adding to 1555413228 its reverse (8223145551), we get a palindrome (9778558779).
It can be divided in two parts, 15554 and 13228, that added together give a palindrome (28782).
The spelling of 1555413228 in words is "one billion, five hundred fifty-five million, four hundred thirteen thousand, two hundred twenty-eight".
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