133973748 has 36 divisors (see below), whose sum is σ = 341953248. Its totient is φ = 44223120.

The previous prime is 133973711. The next prime is 133973759. The reversal of 133973748 is 847379331.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14358 + ... + 21773.

Almost surely, 2^133973748 is an apocalyptic number.

133973748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

133973748 is an abundant number, since it is smaller than the sum of its proper divisors (207979500).

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

133973748 is a wasteful number, since it uses less digits than its factorization.

133973748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36244 (or 36239 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 133973748 is about 11574.7029335530. The cubic root of 133973748 is about 511.6895752150.

The spelling of 133973748 in words is "one hundred thirty-three million, nine hundred seventy-three thousand, seven hundred forty-eight".