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211380479 = 477361609
BaseRepresentation
bin11001001100101…
…10100011111111
3112201202020111122
430212112203333
5413103133404
632550341155
75144463422
oct1446264377
9481666448
10211380479
11a9356312
125a95a7bb
1334a4030b
14201059b9
15138563be
hexc9968ff

211380479 has 8 divisors (see below), whose sum is σ = 218838720. Its totient is φ = 204045696.

The previous prime is 211380467. The next prime is 211380523. The reversal of 211380479 is 974083112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-211380479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211380439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27374 + ... + 34235.

It is an arithmetic number, because the mean of its divisors is an integer number (27354840).

Almost surely, 2211380479 is an apocalyptic number.

211380479 is a deficient number, since it is larger than the sum of its proper divisors (7458241).

211380479 is an equidigital number, since it uses as much as digits as its factorization.

211380479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61729.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 211380479 is about 14538.9297749181. The cubic root of 211380479 is about 595.6918055476.

The spelling of 211380479 in words is "two hundred eleven million, three hundred eighty thousand, four hundred seventy-nine".

Divisors: 1 47 73 3431 61609 2895623 4497457 211380479