133056890 has 16 divisors (see below), whose sum is σ = 245344680. Its totient is φ = 51924480.

The previous prime is 133056883. The next prime is 133056893. The reversal of 133056890 is 98650331.

It can be written as a sum of positive squares in 4 ways, for example, as 57592921 + 75463969 = 7589^2 + 8687^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 133056890.

It is not an unprimeable number, because it can be changed into a prime (133056893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161855 + ... + 162674.

Almost surely, 2^133056890 is an apocalyptic number.

133056890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133056890 is a deficient number, since it is larger than the sum of its proper divisors (112287790).

133056890 is a wasteful number, since it uses less digits than its factorization.

133056890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324577.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 133056890 is about 11535.0288252782. The cubic root of 133056890 is about 510.5196420825.

The spelling of 133056890 in words is "one hundred thirty-three million, fifty-six thousand, eight hundred ninety".