1312080 has 160 divisors (see below), whose sum is σ = 5142528. Its totient is φ = 268800.
The previous prime is 1312079. The next prime is 1312093. The reversal of 1312080 is 802131.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a zygodrome in base 4.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18445 + ... + 18515.
21312080 is an apocalyptic number.
1312080 is a gapful number since it is divisible by the number (10) 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 1312080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2571264).
1312080 is an abundant number, since it is smaller than the sum of its proper divisors (3830448).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1312080 is a wasteful number, since it uses less digits than its factorization.
1312080 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 105 (or 99 counting only the distinct ones).
The product of its (nonzero) digits is 48, while the sum is 15.
The square root of 1312080 is about 1145.4606060446. The cubic root of 1312080 is about 109.4762985335.
It can be divided in two parts, 131 and 2080, that added together give a triangular number (2211 = T66).
The spelling of 1312080 in words is "one million, three hundred twelve thousand, eighty".
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