249943530 has 32 divisors (see below), whose sum is σ = 625947264. Its totient is φ = 63753536.

The previous prime is 249943513. The next prime is 249943531. The reversal of 249943530 is 35349942.

249943530 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (249943531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180429 + ... + 181808.

It is an arithmetic number, because the mean of its divisors is an integer number (19560852).

Almost surely, 2^249943530 is an apocalyptic number.

249943530 is an abundant number, since it is smaller than the sum of its proper divisors (376003734).

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

249943530 is a wasteful number, since it uses less digits than its factorization.

249943530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362270.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 249943530 is about 15809.6024617952. The cubic root of 249943530 is about 629.9130895479.

The spelling of 249943530 in words is "two hundred forty-nine million, nine hundred forty-three thousand, five hundred thirty".