20609060 has 36 divisors (see below), whose sum is σ = 44432724. Its totient is φ = 8029440.

The previous prime is 20609041. The next prime is 20609089. The reversal of 20609060 is 6090602.

It can be written as a sum of positive squares in 6 ways, for example, as 14577124 + 6031936 = 3818^2 + 2456^2 .

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 11 ways as a sum of consecutive naturals, for example, 33314 + ... + 33926.

Almost surely, 2^20609060 is an apocalyptic number.

20609060 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 20609060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22216362).

20609060 is an abundant number, since it is smaller than the sum of its proper divisors (23823664).

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

20609060 is a wasteful number, since it uses less digits than its factorization.

20609060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704 (or 661 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 20609060 is about 4539.7202556986. The cubic root of 20609060 is about 274.1696606730.

Adding to 20609060 its reverse (6090602), we get a palindrome (26699662).

The spelling of 20609060 in words is "twenty million, six hundred nine thousand, sixty".