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83538481 = 136795911
BaseRepresentation
bin1001111101010…
…11001000110001
312211012012020211
410332223020301
5132341212411
612142304121
72033031265
oct476531061
9184165224
1083538481
1143178774
1223b88041
13143cbb70
14b1480a5
157502221
hex4fab231

83538481 has 8 divisors (see below), whose sum is σ = 91308224. Its totient is φ = 75960720.

The previous prime is 83538479. The next prime is 83538517. The reversal of 83538481 is 18483538.

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

It is a cyclic number.

It is not a de Polignac number, because 83538481 - 21 = 83538479 is a prime.

It is a super-2 number, since 2×835384812 = 13957355615574722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83538401) 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, 47085 + ... + 48826.

It is an arithmetic number, because the mean of its divisors is an integer number (11413528).

Almost surely, 283538481 is an apocalyptic number.

It is an amenable number.

83538481 is a deficient number, since it is larger than the sum of its proper divisors (7769743).

83538481 is a wasteful number, since it uses less digits than its factorization.

83538481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95991.

The product of its digits is 92160, while the sum is 40.

The square root of 83538481 is about 9139.9387853530. The cubic root of 83538481 is about 437.1483646367.

The spelling of 83538481 in words is "eighty-three million, five hundred thirty-eight thousand, four hundred eighty-one".

Divisors: 1 13 67 871 95911 1246843 6426037 83538481