540020440 has 32 divisors (see below), whose sum is σ = 1226411280. Its totient is φ = 213987712.

The previous prime is 540020417. The next prime is 540020449. The reversal of 540020440 is 44020045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540020449) 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, 58807 + ... + 67366.

Almost surely, 2^540020440 is an apocalyptic number.

It is an amenable number.

540020440 is an abundant number, since it is smaller than the sum of its proper divisors (686390840).

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

540020440 is a wasteful number, since it uses less digits than its factorization.

540020440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126291 (or 126287 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 540020440 is about 23238.3398718583. The cubic root of 540020440 is about 814.3355594222.

Adding to 540020440 its reverse (44020045), we get a palindrome (584040485).

The spelling of 540020440 in words is "five hundred forty million, twenty thousand, four hundred forty".