255823380 has 96 divisors (see below), whose sum is σ = 804988800. Its totient is φ = 67440384.

The previous prime is 255823369. The next prime is 255823387. The reversal of 255823380 is 83328552.

255823380 is a `hidden beast` number, since 2 + 558 + 23 + 3 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255823387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45399 + ... + 50721.

It is an arithmetic number, because the mean of its divisors is an integer number (8385300).

Almost surely, 2^255823380 is an apocalyptic number.

255823380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255823380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402494400).

255823380 is an abundant number, since it is smaller than the sum of its proper divisors (549165420).

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

255823380 is a wasteful number, since it uses less digits than its factorization.

255823380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5430 (or 5422 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 255823380 is about 15994.4796726871. The cubic root of 255823380 is about 634.8143628312.

The spelling of 255823380 in words is "two hundred fifty-five million, eight hundred twenty-three thousand, three hundred eighty".