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83228885 = 5131283449
BaseRepresentation
bin1001111010111…
…11100011010101
312210121110120022
410331133203111
5132301311020
612131514525
72030301545
oct475374325
9183543508
1083228885
1142a87103
1223a58a45
1314320c7c
14b0a7325
157490625
hex4f5f8d5

83228885 has 16 divisors (see below), whose sum is σ = 101217600. Its totient is φ = 65694720.

The previous prime is 83228861. The next prime is 83228909. The reversal of 83228885 is 58882238.

It is an interprime number because it is at equal distance from previous prime (83228861) and next prime (83228909).

It is not a de Polignac number, because 83228885 - 212 = 83224789 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 185141 + ... + 185589.

It is an arithmetic number, because the mean of its divisors is an integer number (6326100).

Almost surely, 283228885 is an apocalyptic number.

It is an amenable number.

83228885 is a deficient number, since it is larger than the sum of its proper divisors (17988715).

83228885 is a wasteful number, since it uses less digits than its factorization.

83228885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868.

The product of its digits is 245760, while the sum is 44.

The square root of 83228885 is about 9122.9866271962. The cubic root of 83228885 is about 436.6076680256.

The spelling of 83228885 in words is "eighty-three million, two hundred twenty-eight thousand, eight hundred eighty-five".

Divisors: 1 5 131 283 449 655 1415 2245 37073 58819 127067 185365 294095 635335 16645777 83228885