| Base | Representation |
|---|---|
| bin | 1001100101111… |
| … | …0100111100000 |
| 3 | 2210201001220102 |
| 4 | 2121132213200 |
| 5 | 40244432230 |
| 6 | 3554201532 |
| 7 | 665656442 |
| oct | 231364740 |
| 9 | 83631812 |
| 10 | 40233440 |
| 11 | 2078aa85 |
| 12 | 115832a8 |
| 13 | 8448b90 |
| 14 | 54b4492 |
| 15 | 37eb045 |
| hex | 265e9e0 |
40233440 has 144 divisors (see below), whose sum is σ = 110623968. Its totient is φ = 13719552.
The previous prime is 40233409. The next prime is 40233449. The reversal of 40233440 is 4433204.
It is a happy number.
40233440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a Harshad number since it is a multiple of its sum of digits (20).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (40233449) 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 23 ways as a sum of consecutive naturals, for example, 1387346 + ... + 1387374.
It is an arithmetic number, because the mean of its divisors is an integer number (768222).
Almost surely, 240233440 is an apocalyptic number.
40233440 is a gapful number since it is divisible by the number (40) 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 40233440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55311984).
40233440 is an abundant number, since it is smaller than the sum of its proper divisors (70390528).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
40233440 is a wasteful number, since it uses less digits than its factorization.
40233440 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 109 (or 72 counting only the distinct ones).
The product of its (nonzero) digits is 1152, while the sum is 20.
The square root of 40233440 is about 6342.9835251244. The cubic root of 40233440 is about 342.6591939370.
Adding to 40233440 its reverse (4433204), we get a palindrome (44666644).
The spelling of 40233440 in words is "forty million, two hundred thirty-three thousand, four hundred forty".
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