1020880 has 40 divisors (see below), whose sum is σ = 2714112. Its totient is φ = 349824.

The previous prime is 1020853. The next prime is 1020881. The reversal of 1020880 is 880201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352 + ... + 1471.

2^1020880 is an apocalyptic number.

1020880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020880 is an abundant number, since it is smaller than the sum of its proper divisors (1693232).

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

1020880 is a wasteful number, since it uses less digits than its factorization.

1020880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843 (or 1837 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 1020880 is about 1010.3860648287. The cubic root of 1020880 is about 100.6912112618.

The spelling of 1020880 in words is "one million, twenty thousand, eight hundred eighty".