20006930 has 8 divisors (see below), whose sum is σ = 36012492. Its totient is φ = 8002768.

The previous prime is 20006927. The next prime is 20006953. The reversal of 20006930 is 3960002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19971961 + 34969 = 4469^2 + 187^2 .

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

20006930 is a modest number, since divided by 6930 gives 20 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000337 + ... + 1000356.

Almost surely, 2^20006930 is an apocalyptic number.

20006930 is a deficient number, since it is larger than the sum of its proper divisors (16005562).

20006930 is a wasteful number, since it uses less digits than its factorization.

20006930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000700.

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

The square root of 20006930 is about 4472.9106854486. The cubic root of 20006930 is about 271.4731095626.

Adding to 20006930 its reverse (3960002), we get a palindrome (23966932).

The spelling of 20006930 in words is "twenty million, six thousand, nine hundred thirty".