1878784 has 36 divisors (see below), whose sum is σ = 3863160. Its totient is φ = 911360.

The previous prime is 1878781. The next prime is 1878791. The reversal of 1878784 is 4878781.

It is a self number, because there is not a number n which added to its sum of digits gives 1878784.

It is not an unprimeable number, because it can be changed into a prime (1878781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10407 + ... + 10585.

It is an arithmetic number, because the mean of its divisors is an integer number (107310).

2^1878784 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 1878784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1931580).

1878784 is an abundant number, since it is smaller than the sum of its proper divisors (1984376).

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

1878784 is an equidigital number, since it uses as much as digits as its factorization.

1878784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 222 counting only the distinct ones).

The product of its digits is 100352, while the sum is 43.

The square root of 1878784 is about 1370.6874187794. The cubic root of 1878784 is about 123.3935003892.

It can be divided in two parts, 1878 and 784, that added together give a palindrome (2662).

The spelling of 1878784 in words is "one million, eight hundred seventy-eight thousand, seven hundred eighty-four".