2740520 has 32 divisors (see below), whose sum is σ = 6225120. Its totient is φ = 1085760.

The previous prime is 2740513. The next prime is 2740537. The reversal of 2740520 is 250472.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2740492 and 2740501.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4979 + ... + 5501.

It is an arithmetic number, because the mean of its divisors is an integer number (194535).

2^2740520 is an apocalyptic number.

2740520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2740520 is an abundant number, since it is smaller than the sum of its proper divisors (3484600).

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

2740520 is a wasteful number, since it uses less digits than its factorization.

2740520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665 (or 661 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 2740520 is about 1655.4516000173. The cubic root of 2740520 is about 139.9407912896.

2740520 divided by its sum of digits (20) gives a triangular number (137026 = T₅₂₃).

Adding to 2740520 its reverse (250472), we get a palindrome (2990992).

The spelling of 2740520 in words is "two million, seven hundred forty thousand, five hundred twenty".