1000080 has 80 divisors (see below), whose sum is σ = 3452160. Its totient is φ = 266112.

The previous prime is 1000039. The next prime is 1000081. The reversal of 1000080 is 800001.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is not an unprimeable number, because it can be changed into a prime (1000081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1929 + ... + 2391.

It is an arithmetic number, because the mean of its divisors is an integer number (43152).

2^1000080 is an apocalyptic number.

1000080 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 1000080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1726080).

1000080 is an abundant number, since it is smaller than the sum of its proper divisors (2452080).

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

1000080 is a wasteful number, since it uses less digits than its factorization.

1000080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1000080 is about 1000.0399992000. The cubic root of 1000080 is about 100.0026665956.

Adding to 1000080 its reverse (800001), we get a palindrome (1800081).

The spelling of 1000080 in words is "one million, eighty", and thus it is an aban number and an uban number.