255469830 has 256 divisors, whose sum is σ = 814233600. Its totient is φ = 50803200.

The previous prime is 255469817. The next prime is 255469831. The reversal of 255469830 is 38964552.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255469831) by changing a digit.

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 127 ways as a sum of consecutive naturals, for example, 4188000 + ... + 4188060.

It is an arithmetic number, because the mean of its divisors is an integer number (3180600).

Almost surely, 2^255469830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255469830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407116800).

255469830 is an abundant number, since it is smaller than the sum of its proper divisors (558763770).

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

255469830 is a wasteful number, since it uses less digits than its factorization.

255469830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 255469830 is about 15983.4236007183. The cubic root of 255469830 is about 634.5217884655.

The spelling of 255469830 in words is "two hundred fifty-five million, four hundred sixty-nine thousand, eight hundred thirty".