20660234 has 8 divisors (see below), whose sum is σ = 35417568. Its totient is φ = 8854380.

The previous prime is 20660231. The next prime is 20660243. The reversal of 20660234 is 43206602.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20660231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 737852 + ... + 737879.

It is an arithmetic number, because the mean of its divisors is an integer number (4427196).

Almost surely, 2^20660234 is an apocalyptic number.

20660234 is a deficient number, since it is larger than the sum of its proper divisors (14757334).

20660234 is a wasteful number, since it uses less digits than its factorization.

20660234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475740.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 20660234 is about 4545.3530115933. The cubic root of 20660234 is about 274.3964017497.

Adding to 20660234 its reverse (43206602), we get a palindrome (63866836).

The spelling of 20660234 in words is "twenty million, six hundred sixty thousand, two hundred thirty-four".