Base | Representation |
---|---|
bin | 11110001010010… |
… | …00001010110100 |
3 | 122122001212002000 |
4 | 33011020022310 |
5 | 1004232034140 |
6 | 41034415300 |
7 | 6161325246 |
oct | 1705101264 |
9 | 578055060 |
10 | 253002420 |
11 | 11a8a4510 |
12 | 70891530 |
13 | 40554198 |
14 | 2585c096 |
15 | 17328a30 |
hex | f1482b4 |
253002420 has 192 divisors, whose sum is σ = 867041280. Its totient is φ = 60739200.
The previous prime is 253002419. The next prime is 253002433. The reversal of 253002420 is 24200352.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 253002393 and 253002402.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1134429 + ... + 1134651.
It is an arithmetic number, because the mean of its divisors is an integer number (4515840).
Almost surely, 2253002420 is an apocalyptic number.
253002420 is a gapful number since it is divisible by the number (20) 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 253002420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (433520640).
253002420 is an abundant number, since it is smaller than the sum of its proper divisors (614038860).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
253002420 is a wasteful number, since it uses less digits than its factorization.
253002420 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 443 (or 435 counting only the distinct ones).
The product of its (nonzero) digits is 480, while the sum is 18.
The square root of 253002420 is about 15906.0497924532. The cubic root of 253002420 is about 632.4723709075.
Adding to 253002420 its reverse (24200352), we get a palindrome (277202772).
The spelling of 253002420 in words is "two hundred fifty-three million, two thousand, four hundred twenty".
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