1798940 has 96 divisors (see below), whose sum is σ = 4826304. Its totient is φ = 552960.

The previous prime is 1798931. The next prime is 1798943. The reversal of 1798940 is 498971.

1798940 = T₁ + T₂ + ... + T₂₂₀.

1798940 is a nontrivial binomial coefficient, being equal to C(222, 3).

It is a junction number, because it is equal to n+sod(n) for n = 1798894 and 1798903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1798943) by changing a digit.

It is the 220-th tetrahedral number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48602 + ... + 48638.

It is an arithmetic number, because the mean of its divisors is an integer number (50274).

2^1798940 is an apocalyptic number.

1798940 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 1798940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2413152).

1798940 is an abundant number, since it is smaller than the sum of its proper divisors (3027364).

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

1798940 is a wasteful number, since it uses less digits than its factorization.

1798940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 1798940 is about 1341.2456896482. The cubic root of 1798940 is about 121.6201569482.

It can be divided in two parts, 179 and 8940, that added together give a palindrome (9119).

The spelling of 1798940 in words is "one million, seven hundred ninety-eight thousand, nine hundred forty".