206266290 has 16 divisors (see below), whose sum is σ = 495039168. Its totient is φ = 55004336.

The previous prime is 206266283. The next prime is 206266297. The reversal of 206266290 is 92662602.

It is an interprime number because it is at equal distance from previous prime (206266283) and next prime (206266297).

It is not an unprimeable number, because it can be changed into a prime (206266297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3437742 + ... + 3437801.

It is an arithmetic number, because the mean of its divisors is an integer number (30939948).

Almost surely, 2^206266290 is an apocalyptic number.

206266290 is an abundant number, since it is smaller than the sum of its proper divisors (288772878).

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

206266290 is a wasteful number, since it uses less digits than its factorization.

206266290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6875553.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 206266290 is about 14361.9737501501. The cubic root of 206266290 is about 590.8484298425.

The spelling of 206266290 in words is "two hundred six million, two hundred sixty-six thousand, two hundred ninety".