133388 has 6 divisors (see below), whose sum is σ = 233436. Its totient is φ = 66692.

The previous prime is 133387. The next prime is 133391. The reversal of 133388 is 883331.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (133387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16670 + ... + 16677.

It is an arithmetic number, because the mean of its divisors is an integer number (38906).

2¹³³³⁸⁸ is an apocalyptic number.

It is an amenable number.

133388 is a deficient number, since it is larger than the sum of its proper divisors (100048).

133388 is a wasteful number, since it uses less digits than its factorization.

133388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33351 (or 33349 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 133388 is about 365.2232194152. The cubic root of 133388 is about 51.0942764693.

It can be divided in two parts, 13 and 3388, that multiplied together give a palindrome (44044).

The spelling of 133388 in words is "one hundred thirty-three thousand, three hundred eighty-eight".