20134634 has 16 divisors (see below), whose sum is σ = 32606280. Its totient is φ = 9269760.

The previous prime is 20134633. The next prime is 20134643. The reversal of 20134634 is 43643102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6775609 + 13359025 = 2603^2 + 3655^2 .

It is not an unprimeable number, because it can be changed into a prime (20134633) 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, 14114 + ... + 15474.

Almost surely, 2^20134634 is an apocalyptic number.

20134634 is a deficient number, since it is larger than the sum of its proper divisors (12471646).

20134634 is a wasteful number, since it uses less digits than its factorization.

20134634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 20134634 is about 4487.1632464175. The cubic root of 20134634 is about 272.0494881841.

Adding to 20134634 its reverse (43643102), we get a palindrome (63777736).

The spelling of 20134634 in words is "twenty million, one hundred thirty-four thousand, six hundred thirty-four".