255634434 has 64 divisors (see below), whose sum is σ = 626002560. Its totient is φ = 76680000.

The previous prime is 255634429. The next prime is 255634447. The reversal of 255634434 is 434436552.

255634434 is a `hidden beast` number, since 25 + 563 + 44 + 34 = 666.

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 31 ways as a sum of consecutive naturals, for example, 57864 + ... + 62124.

It is an arithmetic number, because the mean of its divisors is an integer number (9781290).

Almost surely, 2^255634434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255634434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313001280).

255634434 is an abundant number, since it is smaller than the sum of its proper divisors (370368126).

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

255634434 is a wasteful number, since it uses less digits than its factorization.

255634434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4384 (or 4378 counting only the distinct ones).

The product of its digits is 172800, while the sum is 36.

The square root of 255634434 is about 15988.5719812621. The cubic root of 255634434 is about 634.6580373011.

The spelling of 255634434 in words is "two hundred fifty-five million, six hundred thirty-four thousand, four hundred thirty-four".