133824247 has 4 divisors (see below), whose sum is σ = 133888336. Its totient is φ = 133760160.

The previous prime is 133824217. The next prime is 133824253. The reversal of 133824247 is 742428331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133824247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133824217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28803 + ... + 33124.

It is an arithmetic number, because the mean of its divisors is an integer number (33472084).

Almost surely, 2^133824247 is an apocalyptic number.

133824247 is a deficient number, since it is larger than the sum of its proper divisors (64089).

133824247 is an equidigital number, since it uses as much as digits as its factorization.

133824247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64088.

The product of its digits is 32256, while the sum is 34.

The square root of 133824247 is about 11568.2430385949. The cubic root of 133824247 is about 511.4991732976.

The spelling of 133824247 in words is "one hundred thirty-three million, eight hundred twenty-four thousand, two hundred forty-seven".