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83738231 = 89940879
BaseRepresentation
bin1001111110110…
…11111001110111
312211120100020222
410333123321313
5132414110411
612150444555
72034522533
oct477337167
9184510228
1083738231
11432a4855
122406375b
131446ba65
14b19abc3
1575414db
hex4fdbe77

83738231 has 4 divisors (see below), whose sum is σ = 84679200. Its totient is φ = 82797264.

The previous prime is 83738219. The next prime is 83738267. The reversal of 83738231 is 13283738.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 83738231 - 210 = 83737207 is a prime.

It is a super-2 number, since 2×837382312 = 14024182662018722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83738191 and 83738200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83738131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470351 + ... + 470528.

It is an arithmetic number, because the mean of its divisors is an integer number (21169800).

Almost surely, 283738231 is an apocalyptic number.

83738231 is a deficient number, since it is larger than the sum of its proper divisors (940969).

83738231 is an equidigital number, since it uses as much as digits as its factorization.

83738231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940968.

The product of its digits is 24192, while the sum is 35.

The square root of 83738231 is about 9150.8595771108. The cubic root of 83738231 is about 437.4965111014.

The spelling of 83738231 in words is "eighty-three million, seven hundred thirty-eight thousand, two hundred thirty-one".

Divisors: 1 89 940879 83738231