2739540 has 24 divisors (see below), whose sum is σ = 7670880. Its totient is φ = 730528.

The previous prime is 2739523. The next prime is 2739557. The reversal of 2739540 is 459372.

2739540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2739523) and next prime (2739557).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2739498 and 2739507.

It is a congruent number.

It is an unprimeable number.

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, 22770 + ... + 22889.

It is an arithmetic number, because the mean of its divisors is an integer number (319620).

2^2739540 is an apocalyptic number.

2739540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2739540 is an abundant number, since it is smaller than the sum of its proper divisors (4931340).

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

2739540 is a wasteful number, since it uses less digits than its factorization.

2739540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45671 (or 45669 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 2739540 is about 1655.1555818110. The cubic root of 2739540 is about 139.9241085279.

The spelling of 2739540 in words is "two million, seven hundred thirty-nine thousand, five hundred forty".