133033404 has 24 divisors (see below), whose sum is σ = 354755968. Its totient is φ = 38009520.

The previous prime is 133033379. The next prime is 133033423. The reversal of 133033404 is 404330331.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791782 + ... + 791949.

Almost surely, 2^133033404 is an apocalyptic number.

133033404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

133033404 is an abundant number, since it is smaller than the sum of its proper divisors (221722564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133033404 is a wasteful number, since it uses less digits than its factorization.

133033404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583745 (or 1583743 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 133033404 is about 11534.0107508186. The cubic root of 133033404 is about 510.4896028769.

Adding to 133033404 its reverse (404330331), we get a palindrome (537363735).

The spelling of 133033404 in words is "one hundred thirty-three million, thirty-three thousand, four hundred four".