206226490 has 16 divisors (see below), whose sum is σ = 393043752. Its totient is φ = 77638144.

The previous prime is 206226467. The next prime is 206226491. The reversal of 206226490 is 94622602.

It can be written as a sum of positive squares in 4 ways, for example, as 206123449 + 103041 = 14357^2 + 321^2 .

It is not an unprimeable number, because it can be changed into a prime (206226491) 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, 606379 + ... + 606718.

Almost surely, 2^206226490 is an apocalyptic number.

206226490 is a deficient number, since it is larger than the sum of its proper divisors (186817262).

206226490 is a wasteful number, since it uses less digits than its factorization.

206226490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213121.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 206226490 is about 14360.5880798803. The cubic root of 206226490 is about 590.8104251187.

The spelling of 206226490 in words is "two hundred six million, two hundred twenty-six thousand, four hundred ninety".