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83488831 = 192231271
BaseRepresentation
bin1001111100111…
…11000000111111
312211002200010221
410332133000333
5132333120311
612141242211
72032433446
oct476370077
9184080127
1083488831
1143144438
1223b63367
13143b239a
14b133d5d
1574e2671
hex4f9f03f

83488831 has 6 divisors (see below), whose sum is σ = 88114632. Its totient is φ = 79094340.

The previous prime is 83488817. The next prime is 83488837. The reversal of 83488831 is 13888438.

It is a happy number.

It is not a de Polignac number, because 83488831 - 25 = 83488799 is a prime.

It is a super-2 number, since 2×834888312 = 13940769803493122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83488837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115275 + ... + 115996.

It is an arithmetic number, because the mean of its divisors is an integer number (14685772).

Almost surely, 283488831 is an apocalyptic number.

83488831 is a deficient number, since it is larger than the sum of its proper divisors (4625801).

83488831 is a wasteful number, since it uses less digits than its factorization.

83488831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231309 (or 231290 counting only the distinct ones).

The product of its digits is 147456, while the sum is 43.

The square root of 83488831 is about 9137.2222803213. Note that the first 4 decimals coincide. The cubic root of 83488831 is about 437.0617430089.

The spelling of 83488831 in words is "eighty-three million, four hundred eighty-eight thousand, eight hundred thirty-one".

Divisors: 1 19 361 231271 4394149 83488831