20010634 has 16 divisors (see below), whose sum is σ = 34639488. Its totient is φ = 8492112.

The previous prime is 20010539. The next prime is 20010637. The reversal of 20010634 is 43601002.

It is not an unprimeable number, because it can be changed into a prime (20010637) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5497 + ... + 8380.

It is an arithmetic number, because the mean of its divisors is an integer number (2164968).

Almost surely, 2^20010634 is an apocalyptic number.

20010634 is a deficient number, since it is larger than the sum of its proper divisors (14628854).

20010634 is a wasteful number, since it uses less digits than its factorization.

20010634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13989.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20010634 is about 4473.3247143484. The cubic root of 20010634 is about 271.4898616638.

Adding to 20010634 its reverse (43601002), we get a palindrome (63611636).

The spelling of 20010634 in words is "twenty million, ten thousand, six hundred thirty-four".