133744 has 20 divisors (see below), whose sum is σ = 279496. Its totient is φ = 61632.

The previous prime is 133733. The next prime is 133769. The reversal of 133744 is 447331.

It is a happy number.

It is a d-powerful number, because it can be written as 1 + 3³ + 7⁴ + 3⁵ + 4⁸ + 4⁸ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114 + ... + 529.

2¹³³⁷⁴⁴ is an apocalyptic number.

It is an amenable number.

133744 is an abundant number, since it is smaller than the sum of its proper divisors (145752).

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

133744 is a wasteful number, since it uses less digits than its factorization.

133744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 658 counting only the distinct ones).

The product of its digits is 1008, while the sum is 22.

The square root of 133744 is about 365.7102678351. The cubic root of 133744 is about 51.1396913599.

The spelling of 133744 in words is "one hundred thirty-three thousand, seven hundred forty-four".