249953740 has 48 divisors (see below), whose sum is σ = 557514720. Its totient is φ = 93864960.

The previous prime is 249953707. The next prime is 249953747. The reversal of 249953740 is 47359942.

It is not an unprimeable number, because it can be changed into a prime (249953747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40030 + ... + 45850.

It is an arithmetic number, because the mean of its divisors is an integer number (11614890).

Almost surely, 2^249953740 is an apocalyptic number.

249953740 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 249953740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278757360).

249953740 is an abundant number, since it is smaller than the sum of its proper divisors (307560980).

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

249953740 is a wasteful number, since it uses less digits than its factorization.

249953740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5962 (or 5960 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 249953740 is about 15809.9253635177. The cubic root of 249953740 is about 629.9216665854.

The spelling of 249953740 in words is "two hundred forty-nine million, nine hundred fifty-three thousand, seven hundred forty".