20628446 has 16 divisors (see below), whose sum is σ = 32847120. Its totient is φ = 9682560.

The previous prime is 20628437. The next prime is 20628451. The reversal of 20628446 is 64482602.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24716 + ... + 25536.

It is an arithmetic number, because the mean of its divisors is an integer number (2052945).

Almost surely, 2^20628446 is an apocalyptic number.

20628446 is a deficient number, since it is larger than the sum of its proper divisors (12218674).

20628446 is a wasteful number, since it uses less digits than its factorization.

20628446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 20628446 is about 4541.8549074139. The cubic root of 20628446 is about 274.2556000183.

The spelling of 20628446 in words is "twenty million, six hundred twenty-eight thousand, four hundred forty-six".