249678216 has 48 divisors (see below), whose sum is σ = 698031360. Its totient is φ = 80540640.

The previous prime is 249678203. The next prime is 249678223. The reversal of 249678216 is 612876942.

It is a happy number.

249678216 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53700 + ... + 58163.

It is an arithmetic number, because the mean of its divisors is an integer number (14542320).

Almost surely, 2^249678216 is an apocalyptic number.

It is an amenable number.

249678216 is an abundant number, since it is smaller than the sum of its proper divisors (448353144).

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

249678216 is a wasteful number, since it uses less digits than its factorization.

249678216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111906 (or 111899 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 249678216 is about 15801.2093208083. The cubic root of 249678216 is about 629.6901272780.

The spelling of 249678216 in words is "two hundred forty-nine million, six hundred seventy-eight thousand, two hundred sixteen".