20232646 has 16 divisors (see below), whose sum is σ = 35804160. Its totient is φ = 8391240.

The previous prime is 20232629. The next prime is 20232647. The reversal of 20232646 is 64623202.

It is a happy number.

It is a super-2 number, since 2×20232646² = 818719928322632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20232646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20232647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22876 + ... + 23743.

It is an arithmetic number, because the mean of its divisors is an integer number (2237760).

Almost surely, 2^20232646 is an apocalyptic number.

20232646 is a deficient number, since it is larger than the sum of its proper divisors (15571514).

20232646 is a wasteful number, since it uses less digits than its factorization.

20232646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46659.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 20232646 is about 4498.0713644850. The cubic root of 20232646 is about 272.4902041761.

Adding to 20232646 its reverse (64623202), we get a palindrome (84855848).

The spelling of 20232646 in words is "twenty million, two hundred thirty-two thousand, six hundred forty-six".