255589340 has 48 divisors (see below), whose sum is σ = 575249472. Its totient is φ = 95141376.

The previous prime is 255589333. The next prime is 255589343. The reversal of 255589340 is 43985552.

It is a super-4 number, since 4×255589340⁴ (a number of 35 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255589343) 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, 9512 + ... + 24528.

It is an arithmetic number, because the mean of its divisors is an integer number (11984364).

Almost surely, 2^255589340 is an apocalyptic number.

255589340 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 255589340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287624736).

255589340 is an abundant number, since it is smaller than the sum of its proper divisors (319660132).

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

255589340 is a wasteful number, since it uses less digits than its factorization.

255589340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15086 (or 15084 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

The square root of 255589340 is about 15987.1617243337. The cubic root of 255589340 is about 634.6207171429.

The spelling of 255589340 in words is "two hundred fifty-five million, five hundred eighty-nine thousand, three hundred forty".