20452006 has 4 divisors (see below), whose sum is σ = 30678012. Its totient is φ = 10226002.

The previous prime is 20451979. The next prime is 20452007. The reversal of 20452006 is 60025402.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20452007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5113000 + ... + 5113003.

It is an arithmetic number, because the mean of its divisors is an integer number (7669503).

Almost surely, 2^20452006 is an apocalyptic number.

20452006 is a deficient number, since it is larger than the sum of its proper divisors (10226006).

20452006 is a wasteful number, since it uses less digits than its factorization.

20452006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10226005.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20452006 is about 4522.3894126888. The cubic root of 20452006 is about 273.4714355988.

Adding to 20452006 its reverse (60025402), we get a palindrome (80477408).

The spelling of 20452006 in words is "twenty million, four hundred fifty-two thousand, six".