1821488 has 10 divisors (see below), whose sum is σ = 3529164. Its totient is φ = 910736.

The previous prime is 1821487. The next prime is 1821497. The reversal of 1821488 is 8841281.

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1821481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56906 + ... + 56937.

2^1821488 is an apocalyptic number.

It is an amenable number.

1821488 is a deficient number, since it is larger than the sum of its proper divisors (1707676).

1821488 is a wasteful number, since it uses less digits than its factorization.

1821488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113851 (or 113845 counting only the distinct ones).

The product of its digits is 4096, while the sum is 32.

The square root of 1821488 is about 1349.6251331388. The cubic root of 1821488 is about 122.1261795843.

The spelling of 1821488 in words is "one million, eight hundred twenty-one thousand, four hundred eighty-eight".