20866832 has 20 divisors (see below), whose sum is σ = 46205376. Its totient is φ = 8942880.

The previous prime is 20866801. The next prime is 20866843. The reversal of 20866832 is 23866802.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20866792 and 20866801.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93044 + ... + 93267.

Almost surely, 2^20866832 is an apocalyptic number.

It is an amenable number.

20866832 is an abundant number, since it is smaller than the sum of its proper divisors (25338544).

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

20866832 is a wasteful number, since it uses less digits than its factorization.

20866832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186326 (or 186320 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 20866832 is about 4568.0227670186. The cubic root of 20866832 is about 275.3080053125.

The spelling of 20866832 in words is "twenty million, eight hundred sixty-six thousand, eight hundred thirty-two".