133488885 has 16 divisors (see below), whose sum is σ = 220947840. Its totient is φ = 68738880.

The previous prime is 133488881. The next prime is 133488893. The reversal of 133488885 is 588884331.

It is not a de Polignac number, because 133488885 - 2² = 133488881 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133488881) 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 15 ways as a sum of consecutive naturals, for example, 153001 + ... + 153870.

It is an arithmetic number, because the mean of its divisors is an integer number (13809240).

Almost surely, 2^133488885 is an apocalyptic number.

133488885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133488885 is a deficient number, since it is larger than the sum of its proper divisors (87458955).

133488885 is a wasteful number, since it uses less digits than its factorization.

133488885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306908.

The product of its digits is 737280, while the sum is 48.

The square root of 133488885 is about 11553.7390051879. The cubic root of 133488885 is about 511.0715455703.

The spelling of 133488885 in words is "one hundred thirty-three million, four hundred eighty-eight thousand, eight hundred eighty-five".