133490 has 16 divisors (see below), whose sum is σ = 274752. Its totient is φ = 45744.

The previous prime is 133481. The next prime is 133493. The reversal of 133490 is 94331.

It is not an unprimeable number, because it can be changed into a prime (133493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 884 + ... + 1023.

It is an arithmetic number, because the mean of its divisors is an integer number (17172).

2¹³³⁴⁹⁰ is an apocalyptic number.

133490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133490 is an abundant number, since it is smaller than the sum of its proper divisors (141262).

It is a weird number, because it is abundant, but not a pseudoperfect number.

133490 is a wasteful number, since it uses less digits than its factorization.

133490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 133490 is about 365.3628333588. The cubic root of 133490 is about 51.1072968518.

The spelling of 133490 in words is "one hundred thirty-three thousand, four hundred ninety".