206469090 has 48 divisors (see below), whose sum is σ = 539675136. Its totient is φ = 54765600.

The previous prime is 206469089. The next prime is 206469103. The reversal of 206469090 is 90964602.

206469090 is a `hidden beast` number, since 2 + 0 + 646 + 9 + 0 + 9 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11185 + ... + 23195.

It is an arithmetic number, because the mean of its divisors is an integer number (11243232).

Almost surely, 2^206469090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206469090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269837568).

206469090 is an abundant number, since it is smaller than the sum of its proper divisors (333206046).

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

206469090 is a wasteful number, since it uses less digits than its factorization.

206469090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12215 (or 12212 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 206469090 is about 14369.0323264999. The cubic root of 206469090 is about 591.0420061702.

The spelling of 206469090 in words is "two hundred six million, four hundred sixty-nine thousand, ninety".