133390 has 8 divisors (see below), whose sum is σ = 240120. Its totient is φ = 53352.

The previous prime is 133387. The next prime is 133391. The reversal of 133390 is 93331.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6660 + ... + 6679.

It is an arithmetic number, because the mean of its divisors is an integer number (30015).

2¹³³³⁹⁰ is an apocalyptic number.

133390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133390 is a deficient number, since it is larger than the sum of its proper divisors (106730).

133390 is a wasteful number, since it uses less digits than its factorization.

133390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13346.

The product of its (nonzero) digits is 243, while the sum is 19.

The square root of 133390 is about 365.2259574565. The cubic root of 133390 is about 51.0945318347.

It can be divided in two parts, 13 and 3390, that added together give a triangular number (3403 = T₈₂).

The spelling of 133390 in words is "one hundred thirty-three thousand, three hundred ninety".