Base | Representation |
---|---|
bin | 1001100100100… |
… | …0101001010100 |
3 | 2210112111110020 |
4 | 2121020221110 |
5 | 40234042234 |
6 | 3552225140 |
7 | 665133165 |
oct | 231105124 |
9 | 83474406 |
10 | 40143444 |
11 | 20729400 |
12 | 1153b1b0 |
13 | 8416c23 |
14 | 548d76c |
15 | 37ce549 |
hex | 2648a54 |
40143444 has 36 divisors (see below), whose sum is σ = 102961152. Its totient is φ = 12164240.
The previous prime is 40143437. The next prime is 40143451. The reversal of 40143444 is 44434104.
It is an interprime number because it is at equal distance from previous prime (40143437) and next prime (40143451).
It is a super-2 number, since 2×401434442 = 3222992192362272, which contains 22 as substring.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12372 + ... + 15275.
It is an arithmetic number, because the mean of its divisors is an integer number (2860032).
Almost surely, 240143444 is an apocalyptic number.
40143444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.
It is an amenable number.
40143444 is an abundant number, since it is smaller than the sum of its proper divisors (62817708).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
40143444 is a wasteful number, since it uses less digits than its factorization.
40143444 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 27676 (or 27663 counting only the distinct ones).
The product of its (nonzero) digits is 3072, while the sum is 24.
The square root of 40143444 is about 6335.8854156306. The cubic root of 40143444 is about 342.4035112787.
Adding to 40143444 its reverse (44434104), we get a palindrome (84577548).
The spelling of 40143444 in words is "forty million, one hundred forty-three thousand, four hundred forty-four".
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