1159020 has 72 divisors (see below), whose sum is σ = 3616704. Its totient is φ = 300288.

The previous prime is 1159007. The next prime is 1159027. The reversal of 1159020 is 209511.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1158984 and 1159002.

It is not an unprimeable number, because it can be changed into a prime (1159027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8392 + ... + 8528.

It is an arithmetic number, because the mean of its divisors is an integer number (50232).

2^1159020 is an apocalyptic number.

1159020 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 1159020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1808352).

1159020 is an abundant number, since it is smaller than the sum of its proper divisors (2457684).

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

1159020 is a wasteful number, since it uses less digits than its factorization.

1159020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 1159020 is about 1076.5779117184. The cubic root of 1159020 is about 105.0421599403.

The spelling of 1159020 in words is "one million, one hundred fifty-nine thousand, twenty".