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211213352 = 2373771667
BaseRepresentation
bin11001001011011…
…01110000101000
3112201102202020202
430211231300220
5413032311402
632543011332
75143166240
oct1445556050
9481382222
10211213352
11a9251799
125a899b48
13349b221c
14200a0b20
1513821b02
hexc96dc28

211213352 has 16 divisors (see below), whose sum is σ = 452600160. Its totient is φ = 90519984.

The previous prime is 211213313. The next prime is 211213357. The reversal of 211213352 is 253312112.

It is a super-2 number, since 2×2112133522 = 89222160126151808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211213357) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1885778 + ... + 1885889.

It is an arithmetic number, because the mean of its divisors is an integer number (28287510).

Almost surely, 2211213352 is an apocalyptic number.

It is an amenable number.

211213352 is an abundant number, since it is smaller than the sum of its proper divisors (241386808).

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

211213352 is a wasteful number, since it uses less digits than its factorization.

211213352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3771680 (or 3771676 counting only the distinct ones).

The product of its digits is 360, while the sum is 20.

The square root of 211213352 is about 14533.1810695388. The cubic root of 211213352 is about 595.5347704952.

Adding to 211213352 its reverse (253312112), we get a palindrome (464525464).

The spelling of 211213352 in words is "two hundred eleven million, two hundred thirteen thousand, three hundred fifty-two".

Divisors: 1 2 4 7 8 14 28 56 3771667 7543334 15086668 26401669 30173336 52803338 105606676 211213352