20599116 has 48 divisors (see below), whose sum is σ = 50991360. Its totient is φ = 6454080.

The previous prime is 20599093. The next prime is 20599133. The reversal of 20599116 is 61199502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37806 + ... + 38346.

It is an arithmetic number, because the mean of its divisors is an integer number (1062320).

Almost surely, 2^20599116 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 20599116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25495680).

20599116 is an abundant number, since it is smaller than the sum of its proper divisors (30392244).

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

20599116 is a wasteful number, since it uses less digits than its factorization.

20599116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734 (or 732 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 33.

The square root of 20599116 is about 4538.6249018838. The cubic root of 20599116 is about 274.1255573884.

It can be divided in two parts, 2059 and 9116, that added together give a triangular number (11175 = T₁₄₉).

The spelling of 20599116 in words is "twenty million, five hundred ninety-nine thousand, one hundred sixteen".