268249021 has 8 divisors (see below), whose sum is σ = 270597600. Its totient is φ = 265908048.

The previous prime is 268248989. The next prime is 268249027. The reversal of 268249021 is 120942862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 268249021 - 2⁵ = 268248989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268249027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85930 + ... + 88996.

It is an arithmetic number, because the mean of its divisors is an integer number (33824700).

Almost surely, 2^268249021 is an apocalyptic number.

It is an amenable number.

268249021 is a deficient number, since it is larger than the sum of its proper divisors (2348579).

268249021 is a wasteful number, since it uses less digits than its factorization.

268249021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3803.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 268249021 is about 16378.3094670970. The cubic root of 268249021 is about 644.9302017695.

The spelling of 268249021 in words is "two hundred sixty-eight million, two hundred forty-nine thousand, twenty-one".