20606118 has 32 divisors (see below), whose sum is σ = 45056256. Its totient is φ = 6244128.

The previous prime is 20606099. The next prime is 20606119. The reversal of 20606118 is 81160602.

It is a super-2 number, since 2×20606118² = 849224198059848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20606119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3255 + ... + 7197.

It is an arithmetic number, because the mean of its divisors is an integer number (1408008).

Almost surely, 2^20606118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20606118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22528128).

20606118 is an abundant number, since it is smaller than the sum of its proper divisors (24450138).

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

20606118 is a wasteful number, since it uses less digits than its factorization.

20606118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4028.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 20606118 is about 4539.3962153573. The cubic root of 20606118 is about 274.1566138944.

The spelling of 20606118 in words is "twenty million, six hundred six thousand, one hundred eighteen".