20822006 has 4 divisors (see below), whose sum is σ = 31233012. Its totient is φ = 10411002.

The previous prime is 20821981. The next prime is 20822017. The reversal of 20822006 is 60022802.

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, 5205500 + ... + 5205503.

It is an arithmetic number, because the mean of its divisors is an integer number (7808253).

Almost surely, 2^20822006 is an apocalyptic number.

20822006 is a deficient number, since it is larger than the sum of its proper divisors (10411006).

20822006 is a wasteful number, since it uses less digits than its factorization.

20822006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10411005.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 20822006 is about 4563.1136299680. The cubic root of 20822006 is about 275.1107256595.

Adding to 20822006 its reverse (60022802), we get a palindrome (80844808).

The spelling of 20822006 in words is "twenty million, eight hundred twenty-two thousand, six".