2081387 has 8 divisors (see below), whose sum is σ = 2595072. Its totient is φ = 1621800.

The previous prime is 2081383. The next prime is 2081407. The reversal of 2081387 is 7831802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2081387 - 2² = 2081383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2081383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13439 + ... + 13592.

It is an arithmetic number, because the mean of its divisors is an integer number (324384).

2^2081387 is an apocalyptic number.

2081387 is a deficient number, since it is larger than the sum of its proper divisors (513685).

2081387 is a wasteful number, since it uses less digits than its factorization.

2081387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27049.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 2081387 is about 1442.7012857830. The cubic root of 2081387 is about 127.6784531775.

The spelling of 2081387 in words is "two million, eighty-one thousand, three hundred eighty-seven".