1830720 has 56 divisors (see below), whose sum is σ = 5815584. Its totient is φ = 487936.

The previous prime is 1830701. The next prime is 1830733. The reversal of 1830720 is 270381.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7 + ... + 1913.

2^1830720 is an apocalyptic number.

1830720 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 1830720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2907792).

1830720 is an abundant number, since it is smaller than the sum of its proper divisors (3984864).

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

1830720 is a wasteful number, since it uses less digits than its factorization.

1830720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927 (or 1917 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 1830720 is about 1353.0410193339. The cubic root of 1830720 is about 122.3321594243.

Adding to 1830720 its sum of digits (21), we get a triangular number (1830741 = T₁₉₁₃).

The spelling of 1830720 in words is "one million, eight hundred thirty thousand, seven hundred twenty".