2748381 has 4 divisors (see below), whose sum is σ = 3664512. Its totient is φ = 1832252.

The previous prime is 2748371. The next prime is 2748391. The reversal of 2748381 is 1838472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2748371) and next prime (2748391).

It is a cyclic number.

It is not a de Polignac number, because 2748381 - 2⁷ = 2748253 is a prime.

It is a super-2 number, since 2×2748381² = 15107196242322, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2748371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458061 + ... + 458066.

It is an arithmetic number, because the mean of its divisors is an integer number (916128).

2^2748381 is an apocalyptic number.

2748381 is the 1049-th centered pentagonal number.

It is an amenable number.

2748381 is a deficient number, since it is larger than the sum of its proper divisors (916131).

2748381 is an equidigital number, since it uses as much as digits as its factorization.

2748381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916130.

The product of its digits is 10752, while the sum is 33.

The square root of 2748381 is about 1657.8241764433. The cubic root of 2748381 is about 140.0744671860.

Subtracting from 2748381 its reverse (1838472), we obtain a palindrome (909909).

The spelling of 2748381 in words is "two million, seven hundred forty-eight thousand, three hundred eighty-one".