133790 has 16 divisors (see below), whose sum is σ = 255312. Its totient is φ = 50304.

The previous prime is 133781. The next prime is 133801. The reversal of 133790 is 97331.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

133790 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224 + ... + 563.

It is an arithmetic number, because the mean of its divisors is an integer number (15957).

2¹³³⁷⁹⁰ is an apocalyptic number.

133790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133790 is a deficient number, since it is larger than the sum of its proper divisors (121522).

133790 is a wasteful number, since it uses less digits than its factorization.

133790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811.

The product of its (nonzero) digits is 567, while the sum is 23.

The square root of 133790 is about 365.7731537442. The cubic root of 133790 is about 51.1455536943.

The spelling of 133790 in words is "one hundred thirty-three thousand, seven hundred ninety".