255400432 has 80 divisors (see below), whose sum is σ = 598890240. Its totient is φ = 103071744.

The previous prime is 255400373. The next prime is 255400447. The reversal of 255400432 is 234004552.

It is a junction number, because it is equal to n+sod(n) for n = 255400397 and 255400406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546663 + ... + 547129.

It is an arithmetic number, because the mean of its divisors is an integer number (7486128).

Almost surely, 2^255400432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255400432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299445120).

255400432 is an abundant number, since it is smaller than the sum of its proper divisors (343489808).

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

255400432 is a wasteful number, since it uses less digits than its factorization.

255400432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758 (or 752 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 255400432 is about 15981.2525166208. The cubic root of 255400432 is about 634.4643276282.

Adding to 255400432 its reverse (234004552), we get a palindrome (489404984).

The spelling of 255400432 in words is "two hundred fifty-five million, four hundred thousand, four hundred thirty-two".