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82961238 = 2335393907
BaseRepresentation
bin1001111000111…
…10001101010110
312210002212102110
410330132031112
5132214224423
612122051450
72025105333
oct474361526
9183085373
1082961238
1142914008
1223949b86
13142591b9
14b03798a
15743b193
hex4f1e356

82961238 has 16 divisors (see below), whose sum is σ = 166011840. Its totient is φ = 27638856.

The previous prime is 82961237. The next prime is 82961267. The reversal of 82961238 is 83216928.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 82961196 and 82961205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82961237) 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, 19281 + ... + 23187.

It is an arithmetic number, because the mean of its divisors is an integer number (10375740).

Almost surely, 282961238 is an apocalyptic number.

82961238 is an abundant number, since it is smaller than the sum of its proper divisors (83050602).

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

82961238 is a wasteful number, since it uses less digits than its factorization.

82961238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7451.

The product of its digits is 41472, while the sum is 39.

The square root of 82961238 is about 9108.3059895899. The cubic root of 82961238 is about 436.1391519200.

The spelling of 82961238 in words is "eighty-two million, nine hundred sixty-one thousand, two hundred thirty-eight".

Divisors: 1 2 3 6 3539 3907 7078 7814 10617 11721 21234 23442 13826873 27653746 41480619 82961238