133208445 has 32 divisors (see below), whose sum is σ = 218021760. Its totient is φ = 69431040.

The previous prime is 133208441. The next prime is 133208459. The reversal of 133208445 is 544802331.

It is not a de Polignac number, because 133208445 - 2² = 133208441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133208441) 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 31 ways as a sum of consecutive naturals, for example, 179886 + ... + 180624.

It is an arithmetic number, because the mean of its divisors is an integer number (6813180).

Almost surely, 2^133208445 is an apocalyptic number.

133208445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133208445 is a deficient number, since it is larger than the sum of its proper divisors (84813315).

133208445 is a wasteful number, since it uses less digits than its factorization.

133208445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 133208445 is about 11541.5962934076. The cubic root of 133208445 is about 510.7133999225.

The spelling of 133208445 in words is "one hundred thirty-three million, two hundred eight thousand, four hundred forty-five".