254255440 has 20 divisors (see below), whose sum is σ = 591144084. Its totient is φ = 101702144.

The previous prime is 254255413. The next prime is 254255447. The reversal of 254255440 is 44552452.

It can be written as a sum of positive squares in 2 ways, for example, as 32126224 + 222129216 = 5668^2 + 14904^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254255447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1589017 + ... + 1589176.

Almost surely, 2^254255440 is an apocalyptic number.

254255440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

254255440 is an abundant number, since it is smaller than the sum of its proper divisors (336888644).

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

254255440 is a wasteful number, since it uses less digits than its factorization.

254255440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178206 (or 3178200 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 31.

The square root of 254255440 is about 15945.3893022403. The cubic root of 254255440 is about 633.5147796522.

The spelling of 254255440 in words is "two hundred fifty-four million, two hundred fifty-five thousand, four hundred forty".