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213919841 = 1923514789
BaseRepresentation
bin11001100000000…
…10100001100001
3112220112020212002
430300002201201
5414230413331
633121013345
75205201002
oct1460024141
9486466762
10213919841
11aa830163
125b784255
133541c0b5
14205a71a9
1513ba89cb
hexcc02861

213919841 has 8 divisors (see below), whose sum is σ = 225321600. Its totient is φ = 202532400.

The previous prime is 213919817. The next prime is 213919847. The reversal of 213919841 is 148919312.

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

It is not a de Polignac number, because 213919841 - 226 = 146810977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213919795 and 213919804.

It is not an unprimeable number, because it can be changed into a prime (213919847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42275 + ... + 47063.

It is an arithmetic number, because the mean of its divisors is an integer number (28165200).

Almost surely, 2213919841 is an apocalyptic number.

It is an amenable number.

213919841 is a deficient number, since it is larger than the sum of its proper divisors (11401759).

213919841 is a wasteful number, since it uses less digits than its factorization.

213919841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7159.

The product of its digits is 15552, while the sum is 38.

The square root of 213919841 is about 14625.9988035006. The cubic root of 213919841 is about 598.0677106284.

The spelling of 213919841 in words is "two hundred thirteen million, nine hundred nineteen thousand, eight hundred forty-one".

Divisors: 1 19 2351 4789 44669 90991 11258939 213919841