255870420 has 96 divisors (see below), whose sum is σ = 778643712. Its totient is φ = 62404608.

The previous prime is 255870409. The next prime is 255870421. The reversal of 255870420 is 24078552.

255870420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255870421) 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, 86689 + ... + 89591.

It is an arithmetic number, because the mean of its divisors is an integer number (8110872).

Almost surely, 2^255870420 is an apocalyptic number.

255870420 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 255870420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389321856).

255870420 is an abundant number, since it is smaller than the sum of its proper divisors (522773292).

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

255870420 is a wasteful number, since it uses less digits than its factorization.

255870420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3041 (or 3039 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 255870420 is about 15995.9501124503. The cubic root of 255870420 is about 634.8532696707.

The spelling of 255870420 in words is "two hundred fifty-five million, eight hundred seventy thousand, four hundred twenty".