20672206 has 4 divisors (see below), whose sum is σ = 31008312. Its totient is φ = 10336102.

The previous prime is 20672131. The next prime is 20672227. The reversal of 20672206 is 60227602.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5168050 + ... + 5168053.

It is an arithmetic number, because the mean of its divisors is an integer number (7752078).

Almost surely, 2^20672206 is an apocalyptic number.

20672206 is a deficient number, since it is larger than the sum of its proper divisors (10336106).

20672206 is a wasteful number, since it uses less digits than its factorization.

20672206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10336105.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20672206 is about 4546.6697702824. The cubic root of 20672206 is about 274.4493930726.

Adding to 20672206 its reverse (60227602), we get a palindrome (80899808).

The spelling of 20672206 in words is "twenty million, six hundred seventy-two thousand, two hundred six".