250440420 has 96 divisors (see below), whose sum is σ = 728235648. Its totient is φ = 64253952.

The previous prime is 250440419. The next prime is 250440473. The reversal of 250440420 is 24044052.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 214759 + ... + 215921.

It is an arithmetic number, because the mean of its divisors is an integer number (7585788).

Almost surely, 2^250440420 is an apocalyptic number.

250440420 is a gapful number since it is divisible by the number (20) 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 250440420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364117824).

250440420 is an abundant number, since it is smaller than the sum of its proper divisors (477795228).

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

250440420 is a wasteful number, since it uses less digits than its factorization.

250440420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309 (or 1307 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 250440420 is about 15825.3094756469. The cubic root of 250440420 is about 630.3302375465.

Adding to 250440420 its reverse (24044052), we get a palindrome (274484472).

It can be divided in two parts, 2504 and 40420, that added together give a palindrome (42924).

The spelling of 250440420 in words is "two hundred fifty million, four hundred forty thousand, four hundred twenty".