240055540 has 12 divisors (see below), whose sum is σ = 504116676. Its totient is φ = 96022208.

The previous prime is 240055513. The next prime is 240055559. The reversal of 240055540 is 45550042.

It can be written as a sum of positive squares in 2 ways, for example, as 188732644 + 51322896 = 13738^2 + 7164^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6001369 + ... + 6001408.

It is an arithmetic number, because the mean of its divisors is an integer number (42009723).

Almost surely, 2^240055540 is an apocalyptic number.

240055540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240055540 is an abundant number, since it is smaller than the sum of its proper divisors (264061136).

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

240055540 is a wasteful number, since it uses less digits than its factorization.

240055540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12002786 (or 12002784 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 240055540 is about 15493.7258269275. The cubic root of 240055540 is about 621.4944351860.

The spelling of 240055540 in words is "two hundred forty million, fifty-five thousand, five hundred forty".