540207440 has 80 divisors (see below), whose sum is σ = 1320772608. Its totient is φ = 205083648.

The previous prime is 540207439. The next prime is 540207517. The reversal of 540207440 is 44702045.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251009 + ... + 253151.

Almost surely, 2^540207440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 540207440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (660386304).

540207440 is an abundant number, since it is smaller than the sum of its proper divisors (780565168).

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

540207440 is a wasteful number, since it uses less digits than its factorization.

540207440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316 (or 2310 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 540207440 is about 23242.3630468160. The cubic root of 540207440 is about 814.4295454792.

Adding to 540207440 its reverse (44702045), we get a palindrome (584909485).

The spelling of 540207440 in words is "five hundred forty million, two hundred seven thousand, four hundred forty".