255363440 has 20 divisors (see below), whose sum is σ = 593720184. Its totient is φ = 102145344.

The previous prime is 255363431. The next prime is 255363481. The reversal of 255363440 is 44363552.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 255363397 and 255363406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1595942 + ... + 1596101.

Almost surely, 2^255363440 is an apocalyptic number.

255363440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255363440 is an abundant number, since it is smaller than the sum of its proper divisors (338356744).

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

255363440 is a wasteful number, since it uses less digits than its factorization.

255363440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3192056 (or 3192050 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 255363440 is about 15980.0951186155. The cubic root of 255363440 is about 634.4336943759.

The spelling of 255363440 in words is "two hundred fifty-five million, three hundred sixty-three thousand, four hundred forty".