2749540 has 12 divisors (see below), whose sum is σ = 5774076. Its totient is φ = 1099808.

The previous prime is 2749531. The next prime is 2749543. The reversal of 2749540 is 459472.

2749540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1028196 + 1721344 = 1014^2 + 1312^2 .

It is not an unprimeable number, because it can be changed into a prime (2749543) 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 3 ways as a sum of consecutive naturals, for example, 68719 + ... + 68758.

It is an arithmetic number, because the mean of its divisors is an integer number (481173).

2^2749540 is an apocalyptic number.

2749540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2749540 is an abundant number, since it is smaller than the sum of its proper divisors (3024536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2749540 is a wasteful number, since it uses less digits than its factorization.

2749540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137486 (or 137484 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 2749540 is about 1658.1736941587. The cubic root of 2749540 is about 140.0941543512.

The spelling of 2749540 in words is "two million, seven hundred forty-nine thousand, five hundred forty".