133244433 has 28 divisors (see below), whose sum is σ = 228323328. Its totient is φ = 76136760.

The previous prime is 133244431. The next prime is 133244443. The reversal of 133244433 is 334442331.

It is not a de Polignac number, because 133244433 - 2¹ = 133244431 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 133244397 and 133244406.

It is not an unprimeable number, because it can be changed into a prime (133244431) by changing a digit.

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 27 ways as a sum of consecutive naturals, for example, 7953 + ... + 18158.

Almost surely, 2^133244433 is an apocalyptic number.

It is an amenable number.

133244433 is a deficient number, since it is larger than the sum of its proper divisors (95078895).

133244433 is an frugal number, since it uses more digits than its factorization.

133244433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26136 (or 26121 counting only the distinct ones).

The product of its digits is 10368, while the sum is 27.

The square root of 133244433 is about 11543.1552445594. The cubic root of 133244433 is about 510.7593877449.

Adding to 133244433 its reverse (334442331), we get a palindrome (467686764).

The spelling of 133244433 in words is "one hundred thirty-three million, two hundred forty-four thousand, four hundred thirty-three".