20134545 has 32 divisors (see below), whose sum is σ = 35603712. Its totient is φ = 9664512.

The previous prime is 20134529. The next prime is 20134553. The reversal of 20134545 is 54543102.

It is not a de Polignac number, because 20134545 - 2⁴ = 20134529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4149 + ... + 7581.

It is an arithmetic number, because the mean of its divisors is an integer number (1112616).

Almost surely, 2^20134545 is an apocalyptic number.

It is an amenable number.

20134545 is a deficient number, since it is larger than the sum of its proper divisors (15469167).

20134545 is a wasteful number, since it uses less digits than its factorization.

20134545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3481.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 20134545 is about 4487.1533292278. The cubic root of 20134545 is about 272.0490873417.

Adding to 20134545 its reverse (54543102), we get a palindrome (74677647).

The spelling of 20134545 in words is "twenty million, one hundred thirty-four thousand, five hundred forty-five".