20916060 has 144 divisors (see below), whose sum is σ = 66853248. Its totient is φ = 4878720.

The previous prime is 20916053. The next prime is 20916073. The reversal of 20916060 is 6061902.

It is a self number, because there is not a number n which added to its sum of digits gives 20916060.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 312147 + ... + 312213.

Almost surely, 2^20916060 is an apocalyptic number.

20916060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20916060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33426624).

20916060 is an abundant number, since it is smaller than the sum of its proper divisors (45937188).

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

20916060 is a wasteful number, since it uses less digits than its factorization.

20916060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 20916060 is about 4573.4079197028. The cubic root of 20916060 is about 275.5243329704.

Adding to 20916060 its reverse (6061902), we get a palindrome (26977962).

The spelling of 20916060 in words is "twenty million, nine hundred sixteen thousand, sixty".