1798720 has 112 divisors (see below), whose sum is σ = 5413248. Its totient is φ = 552960.

The previous prime is 1798717. The next prime is 1798721. The reversal of 1798720 is 278971.

1798720 = T₁₁ + T₁₂ + ... + T₂₂₀.

It is a tau number, because it is divible by the number of its divisors (112).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1798721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24604 + ... + 24676.

2^1798720 is an apocalyptic number.

1798720 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 1798720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2706624).

1798720 is an abundant number, since it is smaller than the sum of its proper divisors (3614528).

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

1798720 is a wasteful number, since it uses less digits than its factorization.

1798720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 1798720 is about 1341.1636738296. The cubic root of 1798720 is about 121.6151989312.

The spelling of 1798720 in words is "one million, seven hundred ninety-eight thousand, seven hundred twenty".