133445404 has 12 divisors (see below), whose sum is σ = 234071824. Its totient is φ = 66567744.

The previous prime is 133445381. The next prime is 133445407. The reversal of 133445404 is 404544331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133445407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36792 + ... + 40255.

Almost surely, 2^133445404 is an apocalyptic number.

It is an amenable number.

133445404 is a deficient number, since it is larger than the sum of its proper divisors (100626420).

133445404 is a wasteful number, since it uses less digits than its factorization.

133445404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77484 (or 77482 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 133445404 is about 11551.8571667070. The cubic root of 133445404 is about 511.0160495264.

Adding to 133445404 its reverse (404544331), we get a palindrome (537989735).

The spelling of 133445404 in words is "one hundred thirty-three million, four hundred forty-five thousand, four hundred four".