100290 has 16 divisors (see below), whose sum is σ = 240768. Its totient is φ = 26736.
The previous prime is 100279. The next prime is 100291. The reversal of 100290 is 92001.
It is a happy number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (100291) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1642 + ... + 1701.
It is an arithmetic number, because the mean of its divisors is an integer number (15048).
2100290 is an apocalyptic number.
100290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
100290 is an abundant number, since it is smaller than the sum of its proper divisors (140478).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
100290 is a wasteful number, since it uses less digits than its factorization.
100290 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3353.
The product of its (nonzero) digits is 18, while the sum is 12.
The square root of 100290 is about 316.6859643243. The cubic root of 100290 is about 46.4607137249.
Adding to 100290 its reverse (92001), we get a palindrome (192291).
The spelling of 100290 in words is "one hundred thousand, two hundred ninety".
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