500400540 has 72 divisors (see below), whose sum is σ = 1550203200. Its totient is φ = 130598784.

The previous prime is 500400533. The next prime is 500400541. The reversal of 500400540 is 45004005.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500400541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21115 + ... + 38034.

It is an arithmetic number, because the mean of its divisors is an integer number (21530600).

Almost surely, 2^500400540 is an apocalyptic number.

It is an amenable number.

500400540 is an abundant number, since it is smaller than the sum of its proper divisors (1049802660).

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

500400540 is a wasteful number, since it uses less digits than its factorization.

500400540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59211 (or 59206 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 500400540 is about 22369.6343287055. The cubic root of 500400540 is about 793.9124086216.

Adding to 500400540 its reverse (45004005), we get a palindrome (545404545).

The spelling of 500400540 in words is "five hundred million, four hundred thousand, five hundred forty".