1671984 has 60 divisors (see below), whose sum is σ = 4961736. Its totient is φ = 523776.

The previous prime is 1671983. The next prime is 1671997. The reversal of 1671984 is 4891761.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (1671983) 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, 2107 + ... + 2789.

2^1671984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1671984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2480868).

1671984 is an abundant number, since it is smaller than the sum of its proper divisors (3289752).

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

1671984 is a wasteful number, since it uses less digits than its factorization.

1671984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714 (or 705 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 1671984 is about 1293.0522031225. The cubic root of 1671984 is about 118.6890642121.

The spelling of 1671984 in words is "one million, six hundred seventy-one thousand, nine hundred eighty-four".