133333448 has 16 divisors (see below), whose sum is σ = 264706380. Its totient is φ = 62745088.

The previous prime is 133333439. The next prime is 133333457. The reversal of 133333448 is 844333331.

It is an interprime number because it is at equal distance from previous prime (133333439) and next prime (133333457).

It can be written as a sum of positive squares in 2 ways, for example, as 132664324 + 669124 = 11518^2 + 818^2 .

It is a plaindrome in base 10.

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 3 ways as a sum of consecutive naturals, for example, 490061 + ... + 490332.

Almost surely, 2^133333448 is an apocalyptic number.

It is an amenable number.

133333448 is a deficient number, since it is larger than the sum of its proper divisors (131372932).

133333448 is a wasteful number, since it uses less digits than its factorization.

133333448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980416 (or 980412 counting only the distinct ones).

The product of its digits is 31104, while the sum is 32.

The square root of 133333448 is about 11547.0103490038. The cubic root of 133333448 is about 510.8731013792.

Adding to 133333448 its reverse (844333331), we get a palindrome (977666779).

The spelling of 133333448 in words is "one hundred thirty-three million, three hundred thirty-three thousand, four hundred forty-eight".