20009630 has 8 divisors (see below), whose sum is σ = 36017352. Its totient is φ = 8003848.

The previous prime is 20009611. The next prime is 20009651. The reversal of 20009630 is 3690002.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

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, 1000472 + ... + 1000491.

It is an arithmetic number, because the mean of its divisors is an integer number (4502169).

Almost surely, 2^20009630 is an apocalyptic number.

20009630 is a deficient number, since it is larger than the sum of its proper divisors (16007722).

20009630 is a wasteful number, since it uses less digits than its factorization.

20009630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000970.

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

The square root of 20009630 is about 4473.2124921582. The cubic root of 20009630 is about 271.4853210717.

Adding to 20009630 its reverse (3690002), we get a palindrome (23699632).

The spelling of 20009630 in words is "twenty million, nine thousand, six hundred thirty".