1000980 has 72 divisors (see below), whose sum is σ = 3118752. Its totient is φ = 259776.

The previous prime is 1000973. The next prime is 1000981. The reversal of 1000980 is 890001.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000981) 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, 12019 + ... + 12101.

It is an arithmetic number, because the mean of its divisors is an integer number (43316).

2^1000980 is an apocalyptic number.

1000980 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 1000980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1559376).

1000980 is an abundant number, since it is smaller than the sum of its proper divisors (2117772).

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

1000980 is a wasteful number, since it uses less digits than its factorization.

1000980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1000980 is about 1000.4898800088. The cubic root of 1000980 is about 100.0326560014.

Adding to 1000980 its reverse (890001), we get a palindrome (1890981).

The spelling of 1000980 in words is "one million, nine hundred eighty", and thus it is an aban number.