20634044 has 6 divisors (see below), whose sum is σ = 36109584. Its totient is φ = 10317020.

The previous prime is 20634041. The next prime is 20634067. The reversal of 20634044 is 44043602.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20634041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2579252 + ... + 2579259.

It is an arithmetic number, because the mean of its divisors is an integer number (6018264).

Almost surely, 2^20634044 is an apocalyptic number.

It is an amenable number.

20634044 is a deficient number, since it is larger than the sum of its proper divisors (15475540).

20634044 is a wasteful number, since it uses less digits than its factorization.

20634044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5158515 (or 5158513 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 20634044 is about 4542.4711336452. The cubic root of 20634044 is about 274.2804062816.

Adding to 20634044 its reverse (44043602), we get a palindrome (64677646).

The spelling of 20634044 in words is "twenty million, six hundred thirty-four thousand, forty-four".