500404140 has 72 divisors (see below), whose sum is σ = 1597792560. Its totient is φ = 126417024.

The previous prime is 500404117. The next prime is 500404141. The reversal of 500404140 is 41404005.

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

It is not an unprimeable number, because it can be changed into a prime (500404141) 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, 69739 + ... + 76578.

Almost surely, 2^500404140 is an apocalyptic number.

It is an amenable number.

500404140 is an abundant number, since it is smaller than the sum of its proper divisors (1097388420).

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

500404140 is a wasteful number, since it uses less digits than its factorization.

500404140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146351 (or 146346 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 500404140 is about 22369.7147947845. The cubic root of 500404140 is about 793.9143124817.

Adding to 500404140 its reverse (41404005), we get a palindrome (541808145).

The spelling of 500404140 in words is "five hundred million, four hundred four thousand, one hundred forty".