240405500 has 48 divisors (see below), whose sum is σ = 555950304. Its totient is φ = 90502400.

The previous prime is 240405491. The next prime is 240405511. The reversal of 240405500 is 5504042.

It is a happy number.

240405500 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5642 + ... + 22641.

It is an arithmetic number, because the mean of its divisors is an integer number (11582298).

Almost surely, 2^240405500 is an apocalyptic number.

240405500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240405500 is an abundant number, since it is smaller than the sum of its proper divisors (315544804).

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

240405500 is a wasteful number, since it uses less digits than its factorization.

240405500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28319 (or 28307 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 240405500 is about 15505.0153176319. The cubic root of 240405500 is about 621.7962994772.

Adding to 240405500 its reverse (5504042), we get a palindrome (245909542).

The spelling of 240405500 in words is "two hundred forty million, four hundred five thousand, five hundred".