1518220 has 48 divisors (see below), whose sum is σ = 3564288. Its totient is φ = 538560.

The previous prime is 1518203. The next prime is 1518239. The reversal of 1518220 is 228151.

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, 14689 + ... + 14791.

It is an arithmetic number, because the mean of its divisors is an integer number (74256).

2^1518220 is an apocalyptic number.

1518220 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 1518220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1782144).

1518220 is an abundant number, since it is smaller than the sum of its proper divisors (2046068).

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

1518220 is a wasteful number, since it uses less digits than its factorization.

1518220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 1518220 is about 1232.1607038045. The cubic root of 1518220 is about 114.9330423075.

The spelling of 1518220 in words is "one million, five hundred eighteen thousand, two hundred twenty".