133444244 has 6 divisors (see below), whose sum is σ = 233527434. Its totient is φ = 66722120.

The previous prime is 133444211. The next prime is 133444261. The reversal of 133444244 is 442444331.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 121264144 + 12180100 = 11012^2 + 3490^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16680527 + ... + 16680534.

It is an arithmetic number, because the mean of its divisors is an integer number (38921239).

Almost surely, 2^133444244 is an apocalyptic number.

It is an amenable number.

133444244 is a deficient number, since it is larger than the sum of its proper divisors (100083190).

133444244 is a wasteful number, since it uses less digits than its factorization.

133444244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33361065 (or 33361063 counting only the distinct ones).

The product of its digits is 18432, while the sum is 29.

The square root of 133444244 is about 11551.8069582209. The cubic root of 133444244 is about 511.0145688201.

Adding to 133444244 its reverse (442444331), we get a palindrome (575888575).

The spelling of 133444244 in words is "one hundred thirty-three million, four hundred forty-four thousand, two hundred forty-four".