1984980 has 24 divisors (see below), whose sum is σ = 5558112. Its totient is φ = 529312.

The previous prime is 1984979. The next prime is 1984981. The reversal of 1984980 is 894891.

It is an interprime number because it is at equal distance from previous prime (1984979) and next prime (1984981).

It is a super-3 number, since 3×1984980³ = 23463330641645976000, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1984981) 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, 16482 + ... + 16601.

It is an arithmetic number, because the mean of its divisors is an integer number (231588).

2^1984980 is an apocalyptic number.

1984980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1984980 is an abundant number, since it is smaller than the sum of its proper divisors (3573132).

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

1984980 is a wasteful number, since it uses less digits than its factorization.

1984980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33095 (or 33093 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 1984980 is about 1408.8931826082. The cubic root of 1984980 is about 125.6759118906.

The spelling of 1984980 in words is "one million, nine hundred eighty-four thousand, nine hundred eighty".