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81796 = 22112132
BaseRepresentation
bin10011111110000100
311011012111
4103332010
510104141
61430404
7460321
oct237604
9134174
1081796
1156500
123b404
132b300
1421b48
1519381
hex13f84

81796 has 27 divisors (see below), whose sum is σ = 170373. Its totient is φ = 34320.

The previous prime is 81773. The next prime is 81799. The reversal of 81796 is 69718.

81796 = T13 + T14 + ... + T78.

The square root of 81796 is 286.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 12100 + 69696 = 110^2 + 264^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81799) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6286 + ... + 6298.

281796 is an apocalyptic number.

81796 is the 286-th square number.

It is an amenable number.

81796 is an abundant number, since it is smaller than the sum of its proper divisors (88577).

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

81796 is a wasteful number, since it uses less digits than its factorization.

81796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52 (or 26 counting only the distinct ones).

The product of its digits is 3024, while the sum is 31.

The cubic root of 81796 is about 43.4087575325.

The spelling of 81796 in words is "eighty-one thousand, seven hundred ninety-six".

Divisors: 1 2 4 11 13 22 26 44 52 121 143 169 242 286 338 484 572 676 1573 1859 3146 3718 6292 7436 20449 40898 81796