20134530 has 48 divisors (see below), whose sum is σ = 56379960. Its totient is φ = 4955904.

The previous prime is 20134529. The next prime is 20134553. The reversal of 20134530 is 3543102.

20134530 is a `hidden beast` number, since 2 + 0 + 134 + 530 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12131289 + 8003241 = 3483^2 + 2829^2 .

It is a super-3 number, since 3×20134530³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 7435 + ... + 9774.

Almost surely, 2^20134530 is an apocalyptic number.

20134530 is an abundant number, since it is smaller than the sum of its proper divisors (36245430).

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

20134530 is a wasteful number, since it uses less digits than its factorization.

20134530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17235 (or 17232 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 20134530 is about 4487.1516577892. The cubic root of 20134530 is about 272.0490197839.

Adding to 20134530 its reverse (3543102), we get a palindrome (23677632).

The spelling of 20134530 in words is "twenty million, one hundred thirty-four thousand, five hundred thirty".