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211379152 = 2461216577
BaseRepresentation
bin11001001100101…
…10001111010000
3112201202011200111
430212112033100
5413103113102
632550331104
75144456515
oct1446261720
9481664614
10211379152
11a9355316
125a959a94
1334a3c82a
142010530c
1513855cd7
hexc9963d0

211379152 has 20 divisors (see below), whose sum is σ = 416262916. Its totient is φ = 103956480.

The previous prime is 211379143. The next prime is 211379153. The reversal of 211379152 is 251973112.

It can be written as a sum of positive squares in 2 ways, for example, as 25765776 + 185613376 = 5076^2 + 13624^2 .

It is a super-3 number, since 3×2113791523 (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211379153) 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, 107313 + ... + 109264.

Almost surely, 2211379152 is an apocalyptic number.

It is an amenable number.

211379152 is a deficient number, since it is larger than the sum of its proper divisors (204883764).

211379152 is a wasteful number, since it uses less digits than its factorization.

211379152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216646 (or 216640 counting only the distinct ones).

The product of its digits is 3780, while the sum is 31.

The square root of 211379152 is about 14538.8841387501. The cubic root of 211379152 is about 595.6905590044.

The spelling of 211379152 in words is "two hundred eleven million, three hundred seventy-nine thousand, one hundred fifty-two".

Divisors: 1 2 4 8 16 61 122 244 488 976 216577 433154 866308 1732616 3465232 13211197 26422394 52844788 105689576 211379152