1115020 has 24 divisors (see below), whose sum is σ = 2361744. Its totient is φ = 442176.

The previous prime is 1115011. The next prime is 1115027. The reversal of 1115020 is 205111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1114988 and 1115006.

It is not an unprimeable number, because it can be changed into a prime (1115027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3799 + ... + 4081.

It is an arithmetic number, because the mean of its divisors is an integer number (98406).

2^1115020 is an apocalyptic number.

1115020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1115020 is an abundant number, since it is smaller than the sum of its proper divisors (1246724).

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

1115020 is a wasteful number, since it uses less digits than its factorization.

1115020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 1115020 is about 1055.9450743292. The cubic root of 1115020 is about 103.6957329790.

Subtracting from 1115020 its reverse (205111), we obtain a palindrome (909909).

The spelling of 1115020 in words is "one million, one hundred fifteen thousand, twenty".