| Base | Representation |
|---|---|
| bin | 100101100011110… |
| … | …010110010001000 |
| 3 | 1121220201102122000 |
| 4 | 211203302302020 |
| 5 | 2242303440130 |
| 6 | 142310031000 |
| 7 | 21421046655 |
| oct | 4543626210 |
| 9 | 1556642560 |
| 10 | 630140040 |
| 11 | 2a37745a2 |
| 12 | 157048460 |
| 13 | a071c53a |
| 14 | 5d990c2c |
| 15 | 3a4c3260 |
| hex | 258f2c88 |
630140040 has 128 divisors (see below), whose sum is σ = 2109196800. Its totient is φ = 167339520.
The previous prime is 630140023. The next prime is 630140041. The reversal of 630140040 is 40041036.
It is a super-2 number, since 2×6301400402 = 794152940022403200, which contains 22 as substring.
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 = 630139995 and 630140022.
It is not an unprimeable number, because it can be changed into a prime (630140041) 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 31 ways as a sum of consecutive naturals, for example, 291604 + ... + 293756.
It is an arithmetic number, because the mean of its divisors is an integer number (16478100).
Almost surely, 2630140040 is an apocalyptic number.
630140040 is a gapful number since it is divisible by the number (60) 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 630140040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1054598400).
630140040 is an abundant number, since it is smaller than the sum of its proper divisors (1479056760).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
630140040 is a wasteful number, since it uses less digits than its factorization.
630140040 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2444 (or 2434 counting only the distinct ones).
The product of its (nonzero) digits is 288, while the sum is 18.
The square root of 630140040 is about 25102.5903045881. The cubic root of 630140040 is about 857.3254025492.
Adding to 630140040 its reverse (40041036), we get a palindrome (670181076).
The spelling of 630140040 in words is "six hundred thirty million, one hundred forty thousand, forty".
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