20733107 has 4 divisors (see below), whose sum is σ = 21073056. Its totient is φ = 20393160.

The previous prime is 20733103. The next prime is 20733109. The reversal of 20733107 is 70133702.

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 20733107 - 2² = 20733103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20733103) 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, 169883 + ... + 170004.

It is an arithmetic number, because the mean of its divisors is an integer number (5268264).

Almost surely, 2^20733107 is an apocalyptic number.

20733107 is a deficient number, since it is larger than the sum of its proper divisors (339949).

20733107 is an equidigital number, since it uses as much as digits as its factorization.

20733107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339948.

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

The square root of 20733107 is about 4553.3621643792. The cubic root of 20733107 is about 274.7186411591.

Adding to 20733107 its reverse (70133702), we get a palindrome (90866809).

The spelling of 20733107 in words is "twenty million, seven hundred thirty-three thousand, one hundred seven".