255790040 has 32 divisors (see below), whose sum is σ = 627849360. Its totient is φ = 93014400.

The previous prime is 255790039. The next prime is 255790043. The reversal of 255790040 is 40097552.

It is a junction number, because it is equal to n+sod(n) for n = 255789979 and 255790006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255790043) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 290231 + ... + 291110.

Almost surely, 2^255790040 is an apocalyptic number.

255790040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255790040 is an abundant number, since it is smaller than the sum of its proper divisors (372059320).

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

255790040 is a wasteful number, since it uses less digits than its factorization.

255790040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581363 (or 581359 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 255790040 is about 15993.4374041355. The cubic root of 255790040 is about 634.7867843898.

The spelling of 255790040 in words is "two hundred fifty-five million, seven hundred ninety thousand, forty".