255420408 has 32 divisors (see below), whose sum is σ = 659151360. Its totient is φ = 82393440.

The previous prime is 255420397. The next prime is 255420413. The reversal of 255420408 is 804024552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170910 + ... + 172397.

It is an arithmetic number, because the mean of its divisors is an integer number (20598480).

Almost surely, 2^255420408 is an apocalyptic number.

It is an amenable number.

255420408 is an abundant number, since it is smaller than the sum of its proper divisors (403730952).

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

255420408 is a wasteful number, since it uses less digits than its factorization.

255420408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343347 (or 343343 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 255420408 is about 15981.8774867035. The cubic root of 255420408 is about 634.4808686196.

The spelling of 255420408 in words is "two hundred fifty-five million, four hundred twenty thousand, four hundred eight".