1940008 has 40 divisors (see below), whose sum is σ = 4285530. Its totient is φ = 823200.
The previous prime is 1939999. The next prime is 1940041. The reversal of 1940008 is 8000491.
It can be written as a sum of positive squares in only one way, i.e., 1162084 + 777924 = 1078^2 + 882^2 .
It is a zygodrome in base 7.
It is an unprimeable number.
It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 19158 + ... + 19258.
21940008 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1940008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2142765).
1940008 is an abundant number, since it is smaller than the sum of its proper divisors (2345522).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1940008 is an equidigital number, since it uses as much as digits as its factorization.
1940008 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 135 (or 110 counting only the distinct ones).
The product of its (nonzero) digits is 288, while the sum is 22.
The square root of 1940008 is about 1392.8416995481. The cubic root of 1940008 is about 124.7195418832.
Adding to 1940008 its reverse (8000491), we get a palindrome (9940499).
The spelling of 1940008 in words is "one million, nine hundred forty thousand, eight".
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