540740 has 24 divisors (see below), whose sum is σ = 1196160. Its totient is φ = 204768.

The previous prime is 540713. The next prime is 540751. The reversal of 540740 is 47045.

540740 = 68² + 69² + ... + 124².

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

540740 is a modest number, since divided by 740 gives 540 as remainder.

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, 332 + ... + 1091.

It is an arithmetic number, because the mean of its divisors is an integer number (49840).

2⁵⁴⁰⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

540740 is an abundant number, since it is smaller than the sum of its proper divisors (655420).

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

540740 is a wasteful number, since it uses less digits than its factorization.

540740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451 (or 1449 counting only the distinct ones).

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

The square root of 540740 is about 735.3502566804. The cubic root of 540740 is about 81.4697090940.

Adding to 540740 its reverse (47045), we get a palindrome (587785).

The spelling of 540740 in words is "five hundred forty thousand, seven hundred forty".