20000133 has 24 divisors (see below), whose sum is σ = 30730752. Its totient is φ = 12506208.

The previous prime is 20000107. The next prime is 20000147. The reversal of 20000133 is 33100002.

It is a happy number.

It is not a de Polignac number, because 20000133 - 2⁶ = 20000069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10060 + ... + 11882.

It is an arithmetic number, because the mean of its divisors is an integer number (1280448).

Almost surely, 2^20000133 is an apocalyptic number.

20000133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20000133 is a deficient number, since it is larger than the sum of its proper divisors (10730619).

20000133 is a wasteful number, since it uses less digits than its factorization.

20000133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905 (or 1902 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 20000133 is about 4472.1508248269. The cubic root of 20000133 is about 271.4423633541.

Adding to 20000133 its reverse (33100002), we get a palindrome (53100135).

The spelling of 20000133 in words is "twenty million, one hundred thirty-three", and thus it is an aban number.