20134485 has 48 divisors (see below), whose sum is σ = 40884480. Its totient is φ = 8974080.

The previous prime is 20134483. The next prime is 20134489. The reversal of 20134485 is 58443102.

It is not a de Polignac number, because 20134485 - 2¹ = 20134483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20134483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12136 + ... + 13694.

It is an arithmetic number, because the mean of its divisors is an integer number (851760).

Almost surely, 2^20134485 is an apocalyptic number.

It is an amenable number.

20134485 is an abundant number, since it is smaller than the sum of its proper divisors (20749995).

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

20134485 is a wasteful number, since it uses less digits than its factorization.

20134485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618 (or 1615 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 20134485 is about 4487.1466434695. The cubic root of 20134485 is about 272.0488171103.

Adding to 20134485 its reverse (58443102), we get a palindrome (78577587).

The spelling of 20134485 in words is "twenty million, one hundred thirty-four thousand, four hundred eighty-five".