268221946 has 4 divisors (see below), whose sum is σ = 402332922. Its totient is φ = 134110972.

The previous prime is 268221931. The next prime is 268221949. The reversal of 268221946 is 649122862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 243828225 + 24393721 = 15615^2 + 4939^2 .

It is a junction number, because it is equal to n+sod(n) for n = 268221899 and 268221908.

It is not an unprimeable number, because it can be changed into a prime (268221949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67055485 + ... + 67055488.

Almost surely, 2^268221946 is an apocalyptic number.

268221946 is a deficient number, since it is larger than the sum of its proper divisors (134110976).

268221946 is a wasteful number, since it uses less digits than its factorization.

268221946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134110975.

The product of its digits is 82944, while the sum is 40.

The square root of 268221946 is about 16377.4828957322. The cubic root of 268221946 is about 644.9085029357.

The spelling of 268221946 in words is "two hundred sixty-eight million, two hundred twenty-one thousand, nine hundred forty-six".