206510252 has 24 divisors (see below), whose sum is σ = 398247696. Its totient is φ = 93094848.

The previous prime is 206510243. The next prime is 206510279. The reversal of 206510252 is 252015602.

It is a super-2 number, since 2×206510252² = 85292968362207008, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43943 + ... + 48414.

It is an arithmetic number, because the mean of its divisors is an integer number (16593654).

Almost surely, 2^206510252 is an apocalyptic number.

It is an amenable number.

206510252 is a deficient number, since it is larger than the sum of its proper divisors (191737444).

206510252 is a wasteful number, since it uses less digits than its factorization.

206510252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92417 (or 92415 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 206510252 is about 14370.4645714744. The cubic root of 206510252 is about 591.0812805793.

Adding to 206510252 its reverse (252015602), we get a palindrome (458525854).

The spelling of 206510252 in words is "two hundred six million, five hundred ten thousand, two hundred fifty-two".