206212104 has 96 divisors (see below), whose sum is σ = 644754240. Its totient is φ = 58320000.

The previous prime is 206212103. The next prime is 206212109. The reversal of 206212104 is 401212602.

206212104 is a `hidden beast` number, since 20 + 621 + 21 + 0 + 4 = 666.

It is a super-2 number, since 2×206212104² = 85046863672213632, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206212103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48879 + ... + 52929.

It is an arithmetic number, because the mean of its divisors is an integer number (6716190).

Almost surely, 2^206212104 is an apocalyptic number.

206212104 is a gapful number since it is divisible by the number (24) 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 206212104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322377120).

206212104 is an abundant number, since it is smaller than the sum of its proper divisors (438542136).

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

206212104 is a wasteful number, since it uses less digits than its factorization.

206212104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4171 (or 4164 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 206212104 is about 14360.0871863649. The cubic root of 206212104 is about 590.7966868312.

Adding to 206212104 its reverse (401212602), we get a palindrome (607424706).

The spelling of 206212104 in words is "two hundred six million, two hundred twelve thousand, one hundred four".