20534113 has 8 divisors (see below), whose sum is σ = 21810600. Its totient is φ = 19265280.

The previous prime is 20534099. The next prime is 20534141. The reversal of 20534113 is 31143502.

It can be written as a sum of positive squares in 4 ways, for example, as 4717584 + 15816529 = 2172^2 + 3977^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20534113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20534413) 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, 4203 + ... + 7663.

It is an arithmetic number, because the mean of its divisors is an integer number (2726325).

Almost surely, 2^20534113 is an apocalyptic number.

It is an amenable number.

20534113 is a deficient number, since it is larger than the sum of its proper divisors (1276487).

20534113 is a wasteful number, since it uses less digits than its factorization.

20534113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3827.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 20534113 is about 4531.4581538397. The cubic root of 20534113 is about 273.8369081108.

Adding to 20534113 its reverse (31143502), we get a palindrome (51677615).

The spelling of 20534113 in words is "twenty million, five hundred thirty-four thousand, one hundred thirteen".