20620206 has 24 divisors (see below), whose sum is σ = 47029320. Its totient is φ = 6511536.

The previous prime is 20620183. The next prime is 20620217. The reversal of 20620206 is 60202602.

20620206 is a `hidden beast` number, since 20 + 620 + 20 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29805 + ... + 30488.

It is an arithmetic number, because the mean of its divisors is an integer number (1959555).

Almost surely, 2^20620206 is an apocalyptic number.

20620206 is an abundant number, since it is smaller than the sum of its proper divisors (26409114).

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

20620206 is a wasteful number, since it uses less digits than its factorization.

20620206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60320 (or 60317 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20620206 is about 4540.9476984436. The cubic root of 20620206 is about 274.2190781670.

Adding to 20620206 its reverse (60202602), we get a palindrome (80822808).

The spelling of 20620206 in words is "twenty million, six hundred twenty thousand, two hundred six".