254223640 has 32 divisors (see below), whose sum is σ = 624004560. Its totient is φ = 92444800.

The previous prime is 254223587. The next prime is 254223649. The reversal of 254223640 is 46322452.

254223640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 254223599 and 254223608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254223649) 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 7 ways as a sum of consecutive naturals, for example, 288451 + ... + 289330.

Almost surely, 2^254223640 is an apocalyptic number.

254223640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

254223640 is an abundant number, since it is smaller than the sum of its proper divisors (369780920).

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

254223640 is a wasteful number, since it uses less digits than its factorization.

254223640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577803 (or 577799 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 254223640 is about 15944.3921176067. The cubic root of 254223640 is about 633.4883670939.

The spelling of 254223640 in words is "two hundred fifty-four million, two hundred twenty-three thousand, six hundred forty".