1019980 has 24 divisors (see below), whose sum is σ = 2307312. Its totient is φ = 376512.

The previous prime is 1019971. The next prime is 1020001. The reversal of 1019980 is 899101.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1702 + ... + 2221.

It is an arithmetic number, because the mean of its divisors is an integer number (96138).

2^1019980 is an apocalyptic number.

1019980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1019980 is an abundant number, since it is smaller than the sum of its proper divisors (1287332).

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

1019980 is a wasteful number, since it uses less digits than its factorization.

1019980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3945 (or 3943 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 1019980 is about 1009.9405923122. The cubic root of 1019980 is about 100.6616130284.

The spelling of 1019980 in words is "one million, nineteen thousand, nine hundred eighty".