2740140 has 72 divisors (see below), whose sum is σ = 8958768. Its totient is φ = 673920.

The previous prime is 2740139. The next prime is 2740141. The reversal of 2740140 is 410472.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2740139) and next prime (2740141).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2740141) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1755 + ... + 2925.

2^2740140 is an apocalyptic number.

2740140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2740140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4479384).

2740140 is an abundant number, since it is smaller than the sum of its proper divisors (6218628).

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

2740140 is a wasteful number, since it uses less digits than its factorization.

2740140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199 (or 1194 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 2740140 is about 1655.3368237310. The cubic root of 2740140 is about 139.9343229358.

The spelling of 2740140 in words is "two million, seven hundred forty thousand, one hundred forty".