20133147 has 8 divisors (see below), whose sum is σ = 26866960. Its totient is φ = 13410720.

The previous prime is 20133137. The next prime is 20133149. The reversal of 20133147 is 74133102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20133147 - 2⁴ = 20133131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20133149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2997 + ... + 7017.

It is an arithmetic number, because the mean of its divisors is an integer number (3358370).

Almost surely, 2^20133147 is an apocalyptic number.

20133147 is a deficient number, since it is larger than the sum of its proper divisors (6733813).

20133147 is a wasteful number, since it uses less digits than its factorization.

20133147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5693.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 20133147 is about 4486.9975484727. The cubic root of 20133147 is about 272.0427908096.

Adding to 20133147 its reverse (74133102), we get a palindrome (94266249).

The spelling of 20133147 in words is "twenty million, one hundred thirty-three thousand, one hundred forty-seven".