20534130 has 48 divisors (see below), whose sum is σ = 56533464. Its totient is φ = 5153280.

The previous prime is 20534099. The next prime is 20534141. The reversal of 20534130 is 3143502.

20534130 is a `hidden beast` number, since 2 + 0 + 534 + 130 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 20493729 + 40401 = 4527^2 + 201^2 .

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

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 5181 + ... + 8240.

Almost surely, 2^20534130 is an apocalyptic number.

20534130 is an abundant number, since it is smaller than the sum of its proper divisors (35999334).

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

20534130 is a wasteful number, since it uses less digits than its factorization.

20534130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13451 (or 13448 counting only the distinct ones).

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

The square root of 20534130 is about 4531.4600296152. The cubic root of 20534130 is about 273.8369836798.

Adding to 20534130 its reverse (3143502), we get a palindrome (23677632).

The spelling of 20534130 in words is "twenty million, five hundred thirty-four thousand, one hundred thirty".