206626490 has 32 divisors (see below), whose sum is σ = 429456384. Its totient is φ = 70110720.

The previous prime is 206626487. The next prime is 206626499. The reversal of 206626490 is 94626602.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 206626490.

It is not an unprimeable number, because it can be changed into a prime (206626499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8426 + ... + 22005.

It is an arithmetic number, because the mean of its divisors is an integer number (13420512).

Almost surely, 2^206626490 is an apocalyptic number.

206626490 is an abundant number, since it is smaller than the sum of its proper divisors (222829894).

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

206626490 is a wasteful number, since it uses less digits than its factorization.

206626490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30542.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 206626490 is about 14374.5083394181. The cubic root of 206626490 is about 591.1921600126.

The spelling of 206626490 in words is "two hundred six million, six hundred twenty-six thousand, four hundred ninety".