20133707 has 4 divisors (see below), whose sum is σ = 21964056. Its totient is φ = 18303360.

The previous prime is 20133689. The next prime is 20133713. The reversal of 20133707 is 70733102.

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

It is a cyclic number.

It is not a de Polignac number, because 20133707 - 2¹⁰ = 20132683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20133727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915158 + ... + 915179.

It is an arithmetic number, because the mean of its divisors is an integer number (5491014).

Almost surely, 2^20133707 is an apocalyptic number.

20133707 is a deficient number, since it is larger than the sum of its proper divisors (1830349).

20133707 is a wasteful number, since it uses less digits than its factorization.

20133707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830348.

The product of its (nonzero) digits is 882, while the sum is 23.

The square root of 20133707 is about 4487.0599505690. The cubic root of 20133707 is about 272.0453130606.

Adding to 20133707 its reverse (70733102), we get a palindrome (90866809).

The spelling of 20133707 in words is "twenty million, one hundred thirty-three thousand, seven hundred seven".