249752668 has 24 divisors (see below), whose sum is σ = 477938160. Its totient is φ = 113253120.

The previous prime is 249752639. The next prime is 249752683. The reversal of 249752668 is 866257942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12498 + ... + 25606.

It is an arithmetic number, because the mean of its divisors is an integer number (19914090).

Almost surely, 2^249752668 is an apocalyptic number.

It is an amenable number.

249752668 is a deficient number, since it is larger than the sum of its proper divisors (228185492).

249752668 is a wasteful number, since it uses less digits than its factorization.

249752668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13557 (or 13555 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 49.

The square root of 249752668 is about 15803.5650408381. The cubic root of 249752668 is about 629.7527105381.

The spelling of 249752668 in words is "two hundred forty-nine million, seven hundred fifty-two thousand, six hundred sixty-eight".