1218132 has 24 divisors (see below), whose sum is σ = 3158400. Its totient is φ = 406008.

The previous prime is 1218131. The next prime is 1218157. The reversal of 1218132 is 2318121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5532 + ... + 5747.

It is an arithmetic number, because the mean of its divisors is an integer number (131600).

2^1218132 is an apocalyptic number.

1218132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1218132 is an abundant number, since it is smaller than the sum of its proper divisors (1940268).

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

1218132 is a wasteful number, since it uses less digits than its factorization.

1218132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11292 (or 11284 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1218132 is about 1103.6901739166. The cubic root of 1218132 is about 106.7984092681.

The spelling of 1218132 in words is "one million, two hundred eighteen thousand, one hundred thirty-two".