206288290 has 32 divisors (see below), whose sum is σ = 400619520. Its totient is φ = 76027584.

The previous prime is 206288287. The next prime is 206288317. The reversal of 206288290 is 92882602.

206288290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×206288290² = 85109717182248200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92367 + ... + 94573.

It is an arithmetic number, because the mean of its divisors is an integer number (12519360).

Almost surely, 2^206288290 is an apocalyptic number.

206288290 is a deficient number, since it is larger than the sum of its proper divisors (194331230).

206288290 is a wasteful number, since it uses less digits than its factorization.

206288290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2946.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 206288290 is about 14362.7396411687. The cubic root of 206288290 is about 590.8694353808.

The spelling of 206288290 in words is "two hundred six million, two hundred eighty-eight thousand, two hundred ninety".