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208315052 = 221121273389
BaseRepresentation
bin11000110101010…
…10001010101100
3112111222111112022
430122222022230
5411312040202
632400525312
75106435341
oct1432521254
9474874468
10208315052
11a7652200
1259920838
1334208c5a
141d9487c8
151344cea2
hexc6aa2ac

208315052 has 36 divisors (see below), whose sum is σ = 403979520. Its totient is φ = 93915360.

The previous prime is 208315043. The next prime is 208315099. The reversal of 208315052 is 250513802.

It is a nialpdrome in base 11.

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 11 ways as a sum of consecutive naturals, for example, 59774 + ... + 63162.

Almost surely, 2208315052 is an apocalyptic number.

208315052 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

208315052 is a deficient number, since it is larger than the sum of its proper divisors (195664468).

208315052 is a wasteful number, since it uses less digits than its factorization.

208315052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3542 (or 3529 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 208315052 is about 14433.1234318840. The cubic root of 208315052 is about 592.7982103072.

Adding to 208315052 its reverse (250513802), we get a palindrome (458828854).

The spelling of 208315052 in words is "two hundred eight million, three hundred fifteen thousand, fifty-two".

Divisors: 1 2 4 11 22 44 121 127 242 254 484 508 1397 2794 3389 5588 6778 13556 15367 30734 37279 61468 74558 149116 410069 430403 820138 860806 1640276 1721612 4734433 9468866 18937732 52078763 104157526 208315052