20016634 has 16 divisors (see below), whose sum is σ = 33125760. Its totient is φ = 8995360.

The previous prime is 20016631. The next prime is 20016643. The reversal of 20016634 is 43661002.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (20016631) 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, 3154 + ... + 7069.

It is an arithmetic number, because the mean of its divisors is an integer number (2070360).

Almost surely, 2^20016634 is an apocalyptic number.

20016634 is a deficient number, since it is larger than the sum of its proper divisors (13109126).

20016634 is a wasteful number, since it uses less digits than its factorization.

20016634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10325.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 20016634 is about 4473.9953062112. The cubic root of 20016634 is about 271.5169935110.

Adding to 20016634 its reverse (43661002), we get a palindrome (63677636).

The spelling of 20016634 in words is "twenty million, sixteen thousand, six hundred thirty-four".