250423840 has 24 divisors (see below), whose sum is σ = 591626700. Its totient is φ = 100169472.

The previous prime is 250423769. The next prime is 250423843. The reversal of 250423840 is 48324052.

It can be written as a sum of positive squares in 2 ways, for example, as 250019344 + 404496 = 15812^2 + 636^2 .

It is a junction number, because it is equal to n+sod(n) for n = 250423799 and 250423808.

It is not an unprimeable number, because it can be changed into a prime (250423843) 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, 782415 + ... + 782734.

Almost surely, 2^250423840 is an apocalyptic number.

250423840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

250423840 is an abundant number, since it is smaller than the sum of its proper divisors (341202860).

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

250423840 is a wasteful number, since it uses less digits than its factorization.

250423840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565164 (or 1565156 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 250423840 is about 15824.7856225606. The cubic root of 250423840 is about 630.3163272440.

Adding to 250423840 its reverse (48324052), we get a palindrome (298747892).

It can be divided in two parts, 25042 and 3840, that added together give a palindrome (28882).

The spelling of 250423840 in words is "two hundred fifty million, four hundred twenty-three thousand, eight hundred forty".