1218336 has 96 divisors (see below), whose sum is σ = 3830400. Its totient is φ = 338688.

The previous prime is 1218313. The next prime is 1218367. The reversal of 1218336 is 6338121.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32910 + ... + 32946.

It is an arithmetic number, because the mean of its divisors is an integer number (39900).

2^1218336 is an apocalyptic number.

1218336 is a gapful number since it is divisible by the number (16) 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 1218336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1915200).

1218336 is an abundant number, since it is smaller than the sum of its proper divisors (2612064).

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

1218336 is an equidigital number, since it uses as much as digits as its factorization.

1218336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 49 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

The square root of 1218336 is about 1103.7825872879. The cubic root of 1218336 is about 106.8043707619.

The spelling of 1218336 in words is "one million, two hundred eighteen thousand, three hundred thirty-six".