20331626 has 16 divisors (see below), whose sum is σ = 36904896. Its totient is φ = 8200896.

The previous prime is 20331617. The next prime is 20331659. The reversal of 20331626 is 62613302.

It is an unprimeable number.

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, 42476 + ... + 42951.

It is an arithmetic number, because the mean of its divisors is an integer number (2306556).

Almost surely, 2^20331626 is an apocalyptic number.

20331626 is a deficient number, since it is larger than the sum of its proper divisors (16573270).

20331626 is a wasteful number, since it uses less digits than its factorization.

20331626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85453.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 20331626 is about 4509.0604342812. The cubic root of 20331626 is about 272.9338307433.

Adding to 20331626 its reverse (62613302), we get a palindrome (82944928).

The spelling of 20331626 in words is "twenty million, three hundred thirty-one thousand, six hundred twenty-six".