2740420 has 24 divisors (see below), whose sum is σ = 5836824. Its totient is φ = 1080576.

The previous prime is 2740403. The next prime is 2740421. The reversal of 2740420 is 240472.

It can be written as a sum of positive squares in 4 ways, for example, as 454276 + 2286144 = 674^2 + 1512^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2740421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522 + ... + 2398.

It is an arithmetic number, because the mean of its divisors is an integer number (243201).

2^2740420 is an apocalyptic number.

2740420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2740420 is an abundant number, since it is smaller than the sum of its proper divisors (3096404).

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

2740420 is a wasteful number, since it uses less digits than its factorization.

2740420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959 (or 1957 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 2740420 is about 1655.4213965030. The cubic root of 2740420 is about 139.9390891492.

Adding to 2740420 its reverse (240472), we get a palindrome (2980892).

It can be divided in two parts, 2740 and 420, that added together give a triangular number (3160 = T₇₉).

The spelling of 2740420 in words is "two million, seven hundred forty thousand, four hundred twenty".