20606218 has 8 divisors (see below), whose sum is σ = 30942720. Its totient is φ = 10291980.

The previous prime is 20606197. The next prime is 20606219. The reversal of 20606218 is 81260602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20606192 and 20606201.

It is not an unprimeable number, because it can be changed into a prime (20606219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3018 + ... + 7093.

It is an arithmetic number, because the mean of its divisors is an integer number (3867840).

Almost surely, 2^20606218 is an apocalyptic number.

20606218 is a deficient number, since it is larger than the sum of its proper divisors (10336502).

20606218 is a wasteful number, since it uses less digits than its factorization.

20606218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11132.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 20606218 is about 4539.4072300246. The cubic root of 20606218 is about 274.1570573811.

The spelling of 20606218 in words is "twenty million, six hundred six thousand, two hundred eighteen".