2081390 has 8 divisors (see below), whose sum is σ = 3746520. Its totient is φ = 832552.

The previous prime is 2081383. The next prime is 2081407. The reversal of 2081390 is 931802.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 104060 + ... + 104079.

It is an arithmetic number, because the mean of its divisors is an integer number (468315).

2^2081390 is an apocalyptic number.

2081390 is a deficient number, since it is larger than the sum of its proper divisors (1665130).

2081390 is a wasteful number, since it uses less digits than its factorization.

2081390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208146.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2081390 is about 1442.7023254989. The cubic root of 2081390 is about 127.6785145204.

The spelling of 2081390 in words is "two million, eighty-one thousand, three hundred ninety".