255438430 has 72 divisors (see below), whose sum is σ = 529899192. Its totient is φ = 88598016.

The previous prime is 255438401. The next prime is 255438497. The reversal of 255438430 is 34834552.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 488149 + ... + 488671.

It is an arithmetic number, because the mean of its divisors is an integer number (7359711).

Almost surely, 2^255438430 is an apocalyptic number.

255438430 is an abundant number, since it is smaller than the sum of its proper divisors (274460762).

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

255438430 is a wasteful number, since it uses less digits than its factorization.

255438430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 255438430 is about 15982.4413028799. The cubic root of 255438430 is about 634.4957908744.

The spelling of 255438430 in words is "two hundred fifty-five million, four hundred thirty-eight thousand, four hundred thirty".