254755840 has 44 divisors (see below), whose sum is σ = 611127756. Its totient is φ = 101900288.

The previous prime is 254755783. The next prime is 254755847. The reversal of 254755840 is 48557452.

It can be written as a sum of positive squares in 2 ways, for example, as 34292736 + 220463104 = 5856^2 + 14848^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 254755793 and 254755802.

It is not an unprimeable number, because it can be changed into a prime (254755847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19759 + ... + 29998.

Almost surely, 2^254755840 is an apocalyptic number.

254755840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

254755840 is an abundant number, since it is smaller than the sum of its proper divisors (356371916).

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

254755840 is an equidigital number, since it uses as much as digits as its factorization.

254755840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49782 (or 49764 counting only the distinct ones).

The product of its (nonzero) digits is 224000, while the sum is 40.

The square root of 254755840 is about 15961.0726456589. The cubic root of 254755840 is about 633.9301140016.

The spelling of 254755840 in words is "two hundred fifty-four million, seven hundred fifty-five thousand, eight hundred forty".