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638822206342 = 21492143698679
BaseRepresentation
bin10010100101111001100…
…01010100101110000110
32021001220121200110211101
421102330301110232012
540431301441100332
61205245412530314
764103416106035
oct11227461245606
92231817613741
10638822206342
11226a17532851
12a398432099a
13483189c2038
1422cc226271c
151193d253ae7
hex94bcc54b86

638822206342 has 8 divisors (see below), whose sum is σ = 964664406000. Its totient is φ = 317267404344.

The previous prime is 638822206307. The next prime is 638822206349. The reversal of 638822206342 is 243602228836.

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

It is a super-2 number, since 2×6388222063422 (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 638822206292 and 638822206301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (638822206349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1071849042 + ... + 1071849637.

It is an arithmetic number, because the mean of its divisors is an integer number (120583050750).

Almost surely, 2638822206342 is an apocalyptic number.

638822206342 is a deficient number, since it is larger than the sum of its proper divisors (325842199658).

638822206342 is a wasteful number, since it uses less digits than its factorization.

638822206342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143698830.

The product of its (nonzero) digits is 1327104, while the sum is 46.

The spelling of 638822206342 in words is "six hundred thirty-eight billion, eight hundred twenty-two million, two hundred six thousand, three hundred forty-two".

Divisors: 1 2 149 298 2143698679 4287397358 319411103171 638822206342