255423320 has 16 divisors (see below), whose sum is σ = 574702560. Its totient is φ = 102169312.

The previous prime is 255423319. The next prime is 255423323. The reversal of 255423320 is 23324552.

It is a self number, because there is not a number n which added to its sum of digits gives 255423320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255423323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3192752 + ... + 3192831.

It is an arithmetic number, because the mean of its divisors is an integer number (35918910).

Almost surely, 2^255423320 is an apocalyptic number.

255423320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255423320 is an abundant number, since it is smaller than the sum of its proper divisors (319279240).

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

255423320 is a wasteful number, since it uses less digits than its factorization.

255423320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6385594 (or 6385590 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 255423320 is about 15981.9685896325. The cubic root of 255423320 is about 634.4832798094.

Adding to 255423320 its reverse (23324552), we get a palindrome (278747872).

The spelling of 255423320 in words is "two hundred fifty-five million, four hundred twenty-three thousand, three hundred twenty".