249760340 has 24 divisors (see below), whose sum is σ = 536696160. Its totient is φ = 97580448.

The previous prime is 249760319. The next prime is 249760361. The reversal of 249760340 is 43067942.

It is an interprime number because it is at equal distance from previous prime (249760319) and next prime (249760361).

It is a self number, because there is not a number n which added to its sum of digits gives 249760340.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 144350 + ... + 146069.

It is an arithmetic number, because the mean of its divisors is an integer number (22362340).

Almost surely, 2^249760340 is an apocalyptic number.

249760340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249760340 is an abundant number, since it is smaller than the sum of its proper divisors (286935820).

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

249760340 is a wasteful number, since it uses less digits than its factorization.

249760340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290471 (or 290469 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 249760340 is about 15803.8077690157. The cubic root of 249760340 is about 629.7591588020.

The spelling of 249760340 in words is "two hundred forty-nine million, seven hundred sixty thousand, three hundred forty".