1518020 has 36 divisors (see below), whose sum is σ = 3710700. Its totient is φ = 520128.

The previous prime is 1518007. The next prime is 1518061. The reversal of 1518020 is 208151.

It can be written as a sum of positive squares in 2 ways, for example, as 529984 + 988036 = 728^2 + 994^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1518020.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206 + ... + 1754.

It is an arithmetic number, because the mean of its divisors is an integer number (103075).

2^1518020 is an apocalyptic number.

1518020 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 1518020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1855350).

1518020 is an abundant number, since it is smaller than the sum of its proper divisors (2192680).

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

1518020 is a wasteful number, since it uses less digits than its factorization.

1518020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572 (or 1563 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1518020 is about 1232.0795428867. The cubic root of 1518020 is about 114.9279952529.

The spelling of 1518020 in words is "one million, five hundred eighteen thousand, twenty".