249020 has 12 divisors (see below), whose sum is σ = 522984. Its totient is φ = 99600.

The previous prime is 249017. The next prime is 249037. The reversal of 249020 is 20942.

It is a self number, because there is not a number n which added to its sum of digits gives 249020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6206 + ... + 6245.

It is an arithmetic number, because the mean of its divisors is an integer number (43582).

2²⁴⁹⁰²⁰ is an apocalyptic number.

249020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249020 is an abundant number, since it is smaller than the sum of its proper divisors (273964).

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

249020 is a wasteful number, since it uses less digits than its factorization.

249020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12460 (or 12458 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 249020 is about 499.0190377130. The cubic root of 249020 is about 62.9136298599.

Adding to 249020 its reverse (20942), we get a palindrome (269962).

The spelling of 249020 in words is "two hundred forty-nine thousand, twenty".