20036634 has 16 divisors (see below), whose sum is σ = 41815872. Its totient is φ = 6388448.

The previous prime is 20036629. The next prime is 20036677. The reversal of 20036634 is 43663002.

It is a Curzon 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, 72459 + ... + 72734.

It is an arithmetic number, because the mean of its divisors is an integer number (2613492).

Almost surely, 2^20036634 is an apocalyptic number.

20036634 is an abundant number, since it is smaller than the sum of its proper divisors (21779238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20036634 is a wasteful number, since it uses less digits than its factorization.

20036634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145221.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 20036634 is about 4476.2298868579. The cubic root of 20036634 is about 271.6073938627.

Adding to 20036634 its reverse (43663002), we get a palindrome (63699636).

The spelling of 20036634 in words is "twenty million, thirty-six thousand, six hundred thirty-four".