1878720 has 112 divisors (see below), whose sum is σ = 6339840. Its totient is φ = 470016.

The previous prime is 1878697. The next prime is 1878733. The reversal of 1878720 is 278781.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18189 + ... + 18291.

2^1878720 is an apocalyptic number.

1878720 is a gapful number since it is divisible by the number (10) 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 1878720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3169920).

1878720 is an abundant number, since it is smaller than the sum of its proper divisors (4461120).

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

1878720 is a wasteful number, since it uses less digits than its factorization.

1878720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 33.

The square root of 1878720 is about 1370.6640726305. The cubic root of 1878720 is about 123.3920992571.

The spelling of 1878720 in words is "one million, eight hundred seventy-eight thousand, seven hundred twenty".