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83038281 = 3293073109
BaseRepresentation
bin1001111001100…
…01000001001001
312210020210002220
410330301001021
5132224211111
612123444253
72025546054
oct474610111
9183223086
1083038281
1142966987
1223986689
13142852a1
14b057a9b
157453e06
hex4f31049

83038281 has 16 divisors (see below), whose sum is σ = 114945600. Its totient is φ = 53258688.

The previous prime is 83038273. The next prime is 83038283. The reversal of 83038281 is 18283038.

It is not a de Polignac number, because 83038281 - 23 = 83038273 is a prime.

It is a super-2 number, since 2×830382812 = 13790712222869922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83038283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25155 + ... + 28263.

It is an arithmetic number, because the mean of its divisors is an integer number (7184100).

Almost surely, 283038281 is an apocalyptic number.

It is an amenable number.

83038281 is a deficient number, since it is larger than the sum of its proper divisors (31907319).

83038281 is a wasteful number, since it uses less digits than its factorization.

83038281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3448.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 83038281 is about 9112.5342797709. The cubic root of 83038281 is about 436.2741188571.

The spelling of 83038281 in words is "eighty-three million, thirty-eight thousand, two hundred eighty-one".

Divisors: 1 3 29 87 307 921 3109 8903 9327 26709 90161 270483 954463 2863389 27679427 83038281