1313298 has 36 divisors (see below), whose sum is σ = 3312270. Its totient is φ = 374976.
The previous prime is 1313297. The next prime is 1313311. The reversal of 1313298 is 8923131.
It can be written as a sum of positive squares in only one way, i.e., 1238769 + 74529 = 1113^2 + 273^2 .
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (1313293) by changing a digit.
It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 138 + ... + 1626.
21313298 is an apocalyptic number.
1313298 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 1313298, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1656135).
1313298 is an abundant number, since it is smaller than the sum of its proper divisors (1998972).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1313298 is a wasteful number, since it uses less digits than its factorization.
1313298 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1511 (or 1501 counting only the distinct ones).
The product of its digits is 1296, while the sum is 27.
The square root of 1313298 is about 1145.9921465699. The cubic root of 1313298 is about 109.5101635653.
The spelling of 1313298 in words is "one million, three hundred thirteen thousand, two hundred ninety-eight".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.080 sec. • engine limits •