1783872 has 84 divisors (see below), whose sum is σ = 5415280. Its totient is φ = 559872.

The previous prime is 1783867. The next prime is 1783879. The reversal of 1783872 is 2783871.

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

It is not an unprimeable number, because it can be changed into a prime (1783879) 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, 10863 + ... + 11025.

2^1783872 is an apocalyptic number.

1783872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1783872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2707640).

1783872 is an abundant number, since it is smaller than the sum of its proper divisors (3631408).

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

1783872 is a wasteful number, since it uses less digits than its factorization.

1783872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 187 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 1783872 is about 1335.6167114857. The cubic root of 1783872 is about 121.2796391920.

Subtracting 1783872 from its reverse (2783871), we obtain a palindrome (999999).

The spelling of 1783872 in words is "one million, seven hundred eighty-three thousand, eight hundred seventy-two".