20600864 has 48 divisors (see below), whose sum is σ = 44110080. Its totient is φ = 9434880.

The previous prime is 20600857. The next prime is 20600873. The reversal of 20600864 is 46800602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18302 + ... + 19394.

It is an arithmetic number, because the mean of its divisors is an integer number (918960).

Almost surely, 2^20600864 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 20600864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22055040).

20600864 is an abundant number, since it is smaller than the sum of its proper divisors (23509216).

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

20600864 is a wasteful number, since it uses less digits than its factorization.

20600864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153 (or 1145 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 20600864 is about 4538.8174671383. The cubic root of 20600864 is about 274.1333110855.

The spelling of 20600864 in words is "twenty million, six hundred thousand, eight hundred sixty-four".