20326642 has 16 divisors (see below), whose sum is σ = 34931520. Its totient is φ = 8689968.

The previous prime is 20326639. The next prime is 20326643. The reversal of 20326642 is 24662302.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20326643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4984 + ... + 8092.

It is an arithmetic number, because the mean of its divisors is an integer number (2183220).

Almost surely, 2^20326642 is an apocalyptic number.

20326642 is a deficient number, since it is larger than the sum of its proper divisors (14604878).

20326642 is a wasteful number, since it uses less digits than its factorization.

20326642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3585.

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

The square root of 20326642 is about 4508.5077353821. The cubic root of 20326642 is about 272.9115270118.

Adding to 20326642 its reverse (24662302), we get a palindrome (44988944).

The spelling of 20326642 in words is "twenty million, three hundred twenty-six thousand, six hundred forty-two".