Base | Representation |
---|---|
bin | 1001101110101… |
… | …0111111001010 |
3 | 2211210021121000 |
4 | 2123222333022 |
5 | 40421332034 |
6 | 4014355430 |
7 | 1003602624 |
oct | 233527712 |
9 | 84707530 |
10 | 40808394 |
11 | 21042a50 |
12 | 117bbb76 |
13 | 85ba7a3 |
14 | 55c3c14 |
15 | 38b1599 |
hex | 26eafca |
40808394 has 128 divisors (see below), whose sum is σ = 107827200. Its totient is φ = 11309760.
The previous prime is 40808393. The next prime is 40808399. The reversal of 40808394 is 49380804.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (40808393) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 396147 + ... + 396249.
It is an arithmetic number, because the mean of its divisors is an integer number (842400).
Almost surely, 240808394 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 40808394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53913600).
40808394 is an abundant number, since it is smaller than the sum of its proper divisors (67018806).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
40808394 is a wasteful number, since it uses less digits than its factorization.
40808394 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 177 (or 171 counting only the distinct ones).
The product of its (nonzero) digits is 27648, while the sum is 36.
The square root of 40808394 is about 6388.1448011140. The cubic root of 40808394 is about 344.2837313457.
The spelling of 40808394 in words is "forty million, eight hundred eight thousand, three hundred ninety-four".
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