20085534 has 48 divisors (see below), whose sum is σ = 52666848. Its totient is φ = 5400576.

The previous prime is 20085521. The next prime is 20085553. The reversal of 20085534 is 43558002.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20085498 and 20085507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2547 + ... + 6830.

It is an arithmetic number, because the mean of its divisors is an integer number (1097226).

Almost surely, 2^20085534 is an apocalyptic number.

20085534 is an abundant number, since it is smaller than the sum of its proper divisors (32581314).

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

20085534 is a wasteful number, since it uses less digits than its factorization.

20085534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9409 (or 9406 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 20085534 is about 4481.6887442124. The cubic root of 20085534 is about 271.8281696589.

The spelling of 20085534 in words is "twenty million, eighty-five thousand, five hundred thirty-four".