249282220 has 48 divisors (see below), whose sum is σ = 604685088. Its totient is φ = 85314560.

The previous prime is 249282193. The next prime is 249282221. The reversal of 249282220 is 22282942.

It is not an unprimeable number, because it can be changed into a prime (249282221) 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, 29587 + ... + 37066.

It is an arithmetic number, because the mean of its divisors is an integer number (12597606).

Almost surely, 2^249282220 is an apocalyptic number.

249282220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249282220 is an abundant number, since it is smaller than the sum of its proper divisors (355402868).

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

249282220 is a wasteful number, since it uses less digits than its factorization.

249282220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66690 (or 66688 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 249282220 is about 15788.6737885105. The cubic root of 249282220 is about 629.3570496076.

The spelling of 249282220 in words is "two hundred forty-nine million, two hundred eighty-two thousand, two hundred twenty".