2181488 has 10 divisors (see below), whose sum is σ = 4226664. Its totient is φ = 1090736.

The previous prime is 2181469. The next prime is 2181503. The reversal of 2181488 is 8841812.

2181488 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68156 + ... + 68187.

2^2181488 is an apocalyptic number.

It is an amenable number.

2181488 is a deficient number, since it is larger than the sum of its proper divisors (2045176).

2181488 is a wasteful number, since it uses less digits than its factorization.

2181488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136351 (or 136345 counting only the distinct ones).

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

The square root of 2181488 is about 1476.9861204493. The cubic root of 2181488 is about 129.6933204820.

The spelling of 2181488 in words is "two million, one hundred eighty-one thousand, four hundred eighty-eight".