250400140 has 24 divisors (see below), whose sum is σ = 556772832. Its totient is φ = 94268160.

The previous prime is 250400131. The next prime is 250400159. The reversal of 250400140 is 41004052.

It is a super-2 number, since 2×250400140² = 125400460224039200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367896 + ... + 368575.

It is an arithmetic number, because the mean of its divisors is an integer number (23198868).

Almost surely, 2^250400140 is an apocalyptic number.

250400140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

250400140 is an abundant number, since it is smaller than the sum of its proper divisors (306372692).

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

250400140 is a wasteful number, since it uses less digits than its factorization.

250400140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736497 (or 736495 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 250400140 is about 15824.0367795326. The cubic root of 250400140 is about 630.2964423318.

Adding to 250400140 its reverse (41004052), we get a palindrome (291404192).

The spelling of 250400140 in words is "two hundred fifty million, four hundred thousand, one hundred forty".