1418820 has 96 divisors (see below), whose sum is σ = 4572288. Its totient is φ = 325632.

The previous prime is 1418797. The next prime is 1418831. The reversal of 1418820 is 288141.

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, 13207 + ... + 13313.

It is an arithmetic number, because the mean of its divisors is an integer number (47628).

2^1418820 is an apocalyptic number.

1418820 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 1418820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2286144).

1418820 is an abundant number, since it is smaller than the sum of its proper divisors (3153468).

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

1418820 is a wasteful number, since it uses less digits than its factorization.

1418820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 1418820 is about 1191.1423088783. The cubic root of 1418820 is about 112.3679438142.

The spelling of 1418820 in words is "one million, four hundred eighteen thousand, eight hundred twenty".