133657368 has 96 divisors (see below), whose sum is σ = 373847040. Its totient is φ = 39761280.

The previous prime is 133657351. The next prime is 133657411. The reversal of 133657368 is 863756331.

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 23 ways as a sum of consecutive naturals, for example, 125205 + ... + 126267.

It is an arithmetic number, because the mean of its divisors is an integer number (3894240).

Almost surely, 2^133657368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133657368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186923520).

133657368 is an abundant number, since it is smaller than the sum of its proper divisors (240189672).

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

133657368 is a wasteful number, since it uses less digits than its factorization.

133657368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129 (or 1112 counting only the distinct ones).

The product of its digits is 272160, while the sum is 42.

The square root of 133657368 is about 11561.0279819746. The cubic root of 133657368 is about 511.2864714946.

The spelling of 133657368 in words is "one hundred thirty-three million, six hundred fifty-seven thousand, three hundred sixty-eight".