133290 has 24 divisors (see below), whose sum is σ = 346788. Its totient is φ = 35520.

The previous prime is 133283. The next prime is 133303. The reversal of 133290 is 92331.

It can be written as a sum of positive squares in 2 ways, for example, as 131769 + 1521 = 363^2 + 39^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 651 + ... + 830.

2¹³³²⁹⁰ is an apocalyptic number.

133290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133290 is an abundant number, since it is smaller than the sum of its proper divisors (213498).

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

133290 is a wasteful number, since it uses less digits than its factorization.

133290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 133290 is about 365.0890302378. The cubic root of 133290 is about 51.0817604362.

The spelling of 133290 in words is "one hundred thirty-three thousand, two hundred ninety".