249784068 has 12 divisors (see below), whose sum is σ = 582829520. Its totient is φ = 83261352.

The previous prime is 249784061. The next prime is 249784079. The reversal of 249784068 is 860487942.

249784068 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (249784061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10407658 + ... + 10407681.

Almost surely, 2^249784068 is an apocalyptic number.

It is an amenable number.

249784068 is an abundant number, since it is smaller than the sum of its proper divisors (333045452).

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

249784068 is a wasteful number, since it uses less digits than its factorization.

249784068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20815346 (or 20815344 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The square root of 249784068 is about 15804.5584563442. The cubic root of 249784068 is about 629.7791011890.

The spelling of 249784068 in words is "two hundred forty-nine million, seven hundred eighty-four thousand, sixty-eight".