205046290 has 32 divisors (see below), whose sum is σ = 390744000. Its totient is φ = 77254848.

The previous prime is 205046287. The next prime is 205046293. The reversal of 205046290 is 92640502.

It is an interprime number because it is at equal distance from previous prime (205046287) and next prime (205046293).

It is not an unprimeable number, because it can be changed into a prime (205046293) 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, 30996 + ... + 37024.

It is an arithmetic number, because the mean of its divisors is an integer number (12210750).

Almost surely, 2^205046290 is an apocalyptic number.

205046290 is a deficient number, since it is larger than the sum of its proper divisors (185697710).

205046290 is a wasteful number, since it uses less digits than its factorization.

205046290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6234.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 205046290 is about 14319.4374889519. The cubic root of 205046290 is about 589.6812316163.

Adding to 205046290 its reverse (92640502), we get a palindrome (297686792).

The spelling of 205046290 in words is "two hundred five million, forty-six thousand, two hundred ninety".