20930006 has 8 divisors (see below), whose sum is σ = 31463640. Its totient is φ = 10442128.

The previous prime is 20929969. The next prime is 20930011. The reversal of 20930006 is 60003902.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20930006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10271 + ... + 12138.

It is an arithmetic number, because the mean of its divisors is an integer number (3932955).

Almost surely, 2^20930006 is an apocalyptic number.

20930006 is a deficient number, since it is larger than the sum of its proper divisors (10533634).

20930006 is a wasteful number, since it uses less digits than its factorization.

20930006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22878.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 20930006 is about 4574.9323492266. The cubic root of 20930006 is about 275.5855556013.

Adding to 20930006 its reverse (60003902), we get a palindrome (80933908).

The spelling of 20930006 in words is "twenty million, nine hundred thirty thousand, six".