1821060 has 72 divisors (see below), whose sum is σ = 5643456. Its totient is φ = 475200.

The previous prime is 1821037. The next prime is 1821067. The reversal of 1821060 is 601281.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1821067) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11985 + ... + 12135.

2^1821060 is an apocalyptic number.

1821060 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 1821060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2821728).

1821060 is an abundant number, since it is smaller than the sum of its proper divisors (3822396).

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

1821060 is a wasteful number, since it uses less digits than its factorization.

1821060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1821060 is about 1349.4665612752. The cubic root of 1821060 is about 122.1166133946.

The spelling of 1821060 in words is "one million, eight hundred twenty-one thousand, sixty".