1308960 has 120 divisors (see below), whose sum is σ = 4665276. Its totient is φ = 345600.
The previous prime is 1308943. The next prime is 1308977. The reversal of 1308960 is 698031.
It is an interprime number because it is at equal distance from previous prime (1308943) and next prime (1308977).
It can be written as a sum of positive squares in 2 ways, for example, as 1245456 + 63504 = 1116^2 + 252^2 .
It is a tau number, because it is divible by the number of its divisors (120).
It is a Harshad number since it is a multiple of its sum of digits (27).
It is an unprimeable number.
It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12910 + ... + 13010.
21308960 is an apocalyptic number.
1308960 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 1308960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2332638).
1308960 is an abundant number, since it is smaller than the sum of its proper divisors (3356316).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1308960 is a wasteful number, since it uses less digits than its factorization.
1308960 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 128 (or 111 counting only the distinct ones).
The product of its (nonzero) digits is 1296, while the sum is 27.
The square root of 1308960 is about 1144.0978979091. The cubic root of 1308960 is about 109.3894549603.
The spelling of 1308960 in words is "one million, three hundred eight thousand, nine hundred sixty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.064 sec. • engine limits •