255407904 has 120 divisors (see below), whose sum is σ = 756323568. Its totient is φ = 84551040.

The previous prime is 255407863. The next prime is 255407909. The reversal of 255407904 is 409704552.

255407904 is a `hidden beast` number, since 25 + 540 + 7 + 90 + 4 = 666.

255407904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (255407909) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 546679 + ... + 547145.

Almost surely, 2^255407904 is an apocalyptic number.

255407904 is a gapful number since it is divisible by the number (24) 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 255407904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (378161784).

255407904 is an abundant number, since it is smaller than the sum of its proper divisors (500915664).

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

255407904 is a wasteful number, since it uses less digits than its factorization.

255407904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 255407904 is about 15981.4862888281. The cubic root of 255407904 is about 634.4705148681.

The spelling of 255407904 in words is "two hundred fifty-five million, four hundred seven thousand, nine hundred four".