240256404 has 18 divisors (see below), whose sum is σ = 607314890. Its totient is φ = 80085456.

The previous prime is 240256397. The next prime is 240256421. The reversal of 240256404 is 404652042.

240256404 is a `hidden beast` number, since 2 + 4 + 0 + 256 + 404 = 666.

240256404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 217503504 + 22752900 = 14748^2 + 4770^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×240256404² = 115446279326022432, which contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 3336859 + ... + 3336930.

Almost surely, 2^240256404 is an apocalyptic number.

It is an amenable number.

240256404 is an abundant number, since it is smaller than the sum of its proper divisors (367058486).

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

240256404 is a wasteful number, since it uses less digits than its factorization.

240256404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6673799 (or 6673794 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 240256404 is about 15500.2065792685. The cubic root of 240256404 is about 621.6677298828.

The spelling of 240256404 in words is "two hundred forty million, two hundred fifty-six thousand, four hundred four".