1320984 has 48 divisors (see below), whose sum is σ = 4090320. Its totient is φ = 377280.

The previous prime is 1320983. The next prime is 1321007. The reversal of 1320984 is 4890231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 807 + ... + 1814.

It is an arithmetic number, because the mean of its divisors is an integer number (85215).

2^1320984 is an apocalyptic number.

1320984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1320984 is an abundant number, since it is smaller than the sum of its proper divisors (2769336).

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

1320984 is a wasteful number, since it uses less digits than its factorization.

1320984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640 (or 2633 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1320984 is about 1149.3406805643. The cubic root of 1320984 is about 109.7233821048.

It can be divided in two parts, 1320 and 984, that added together give a square (2304 = 48²).

The spelling of 1320984 in words is "one million, three hundred twenty thousand, nine hundred eighty-four".