20451044 has 12 divisors (see below), whose sum is σ = 35852544. Its totient is φ = 10207464.

The previous prime is 20451037. The next prime is 20451059. The reversal of 20451044 is 44015402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1784 + ... + 6639.

It is an arithmetic number, because the mean of its divisors is an integer number (2987712).

Almost surely, 2^20451044 is an apocalyptic number.

It is an amenable number.

20451044 is a deficient number, since it is larger than the sum of its proper divisors (15401500).

20451044 is a wasteful number, since it uses less digits than its factorization.

20451044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9034 (or 9032 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 20451044 is about 4522.2830517339. The cubic root of 20451044 is about 273.4671477774.

Adding to 20451044 its reverse (44015402), we get a palindrome (64466446).

The spelling of 20451044 in words is "twenty million, four hundred fifty-one thousand, forty-four".