2048781 has 8 divisors (see below), whose sum is σ = 3121984. Its totient is φ = 1170720.

The previous prime is 2048779. The next prime is 2048797. The reversal of 2048781 is 1878402.

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

It is not a de Polignac number, because 2048781 - 2¹ = 2048779 is a prime.

It is a super-2 number, since 2×2048781² = 8395007171922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2048581) 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 in 7 ways as a sum of consecutive naturals, for example, 48760 + ... + 48801.

It is an arithmetic number, because the mean of its divisors is an integer number (390248).

2^2048781 is an apocalyptic number.

2048781 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2048781 is a deficient number, since it is larger than the sum of its proper divisors (1073203).

2048781 is an equidigital number, since it uses as much as digits as its factorization.

2048781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97571.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 2048781 is about 1431.3563497606. The cubic root of 2048781 is about 127.0082248171.

The spelling of 2048781 in words is "two million, forty-eight thousand, seven hundred eighty-one".