1218560 has 96 divisors (see below), whose sum is σ = 3538080. Its totient is φ = 393216.

The previous prime is 1218559. The next prime is 1218571. The reversal of 1218560 is 658121.

It is a zygodrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71672 + ... + 71688.

It is an arithmetic number, because the mean of its divisors is an integer number (36855).

2^1218560 is an apocalyptic number.

1218560 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 1218560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1769040).

1218560 is an abundant number, since it is smaller than the sum of its proper divisors (2319520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1218560 is an equidigital number, since it uses as much as digits as its factorization.

1218560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51 (or 31 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1218560 is about 1103.8840518823. The cubic root of 1218560 is about 106.8109159495.

The spelling of 1218560 in words is "one million, two hundred eighteen thousand, five hundred sixty".