255693830 has 32 divisors (see below), whose sum is σ = 553685760. Its totient is φ = 83052000.

The previous prime is 255693817. The next prime is 255693839. The reversal of 255693830 is 38396552.

255693830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255693839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94796 + ... + 97455.

It is an arithmetic number, because the mean of its divisors is an integer number (17302680).

Almost surely, 2^255693830 is an apocalyptic number.

255693830 is an abundant number, since it is smaller than the sum of its proper divisors (297991930).

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

255693830 is a wasteful number, since it uses less digits than its factorization.

255693830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192284.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 255693830 is about 15990.4293250682. The cubic root of 255693830 is about 634.7071872128.

The spelling of 255693830 in words is "two hundred fifty-five million, six hundred ninety-three thousand, eight hundred thirty".