205632490 has 32 divisors (see below), whose sum is σ = 424911744. Its totient is φ = 70186560.

The previous prime is 205632481. The next prime is 205632491. The reversal of 205632490 is 94236502.

205632490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (205632491) 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, 9420 + ... + 22360.

It is an arithmetic number, because the mean of its divisors is an integer number (13278492).

Almost surely, 2^205632490 is an apocalyptic number.

205632490 is an abundant number, since it is smaller than the sum of its proper divisors (219279254).

205632490 is a wasteful number, since it uses less digits than its factorization.

205632490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13182.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 205632490 is about 14339.8915616542. The cubic root of 205632490 is about 590.2426369636.

Adding to 205632490 its reverse (94236502), we get a palindrome (299868992).

The spelling of 205632490 in words is "two hundred five million, six hundred thirty-two thousand, four hundred ninety".