20834532 has 54 divisors (see below), whose sum is σ = 54090582. Its totient is φ = 6761664.

The previous prime is 20834509. The next prime is 20834551. The reversal of 20834532 is 23543802.

20834532 is a `hidden beast` number, since 208 + 3 + 453 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11249316 + 9585216 = 3354^2 + 3096^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20834496 and 20834505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 66408 + ... + 66720.

Almost surely, 2^20834532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20834532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27045291).

20834532 is an abundant number, since it is smaller than the sum of its proper divisors (33256050).

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

20834532 is a wasteful number, since it uses less digits than its factorization.

20834532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 20834532 is about 4564.4859513422. The cubic root of 20834532 is about 275.1658811869.

The spelling of 20834532 in words is "twenty million, eight hundred thirty-four thousand, five hundred thirty-two".