268220293 has 4 divisors (see below), whose sum is σ = 292603968. Its totient is φ = 243836620.

The previous prime is 268220269. The next prime is 268220299. The reversal of 268220293 is 392022862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 268220293 - 2¹³ = 268212101 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 (268220299) 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 3 ways as a sum of consecutive naturals, for example, 12191821 + ... + 12191842.

It is an arithmetic number, because the mean of its divisors is an integer number (73150992).

Almost surely, 2^268220293 is an apocalyptic number.

It is an amenable number.

268220293 is a deficient number, since it is larger than the sum of its proper divisors (24383675).

268220293 is a wasteful number, since it uses less digits than its factorization.

268220293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24383674.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 268220293 is about 16377.4324300239. The cubic root of 268220293 is about 644.9071781175.

The spelling of 268220293 in words is "two hundred sixty-eight million, two hundred twenty thousand, two hundred ninety-three".