249802218 has 40 divisors (see below), whose sum is σ = 584087328. Its totient is φ = 79645896.

The previous prime is 249802183. The next prime is 249802219. The reversal of 249802218 is 812208942.

It is a super-2 number, since 2×249802218² = 124802296235439048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (249802219) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 29796 + ... + 37247.

Almost surely, 2^249802218 is an apocalyptic number.

249802218 is an abundant number, since it is smaller than the sum of its proper divisors (334285110).

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

249802218 is a wasteful number, since it uses less digits than its factorization.

249802218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67080 (or 67071 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 249802218 is about 15805.1326473396. The cubic root of 249802218 is about 629.7943546490.

The spelling of 249802218 in words is "two hundred forty-nine million, eight hundred two thousand, two hundred eighteen".