1080020 has 12 divisors (see below), whose sum is σ = 2268084. Its totient is φ = 432000.

The previous prime is 1080007. The next prime is 1080029. The reversal of 1080020 is 200801.

It can be written as a sum of positive squares in 2 ways, for example, as 309136 + 770884 = 556^2 + 878^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1079983 and 1080010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1080029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26981 + ... + 27020.

It is an arithmetic number, because the mean of its divisors is an integer number (189007).

2^1080020 is an apocalyptic number.

1080020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1080020 is an abundant number, since it is smaller than the sum of its proper divisors (1188064).

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

1080020 is a wasteful number, since it uses less digits than its factorization.

1080020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54010 (or 54008 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1080020 is about 1039.2401070013. The cubic root of 1080020 is about 102.5991901211.

Adding to 1080020 its reverse (200801), we get a palindrome (1280821).

It can be divided in two parts, 10800 and 20, that multiplied together give a cube (216000 = 60³).

The spelling of 1080020 in words is "one million, eighty thousand, twenty".