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83930087 = 1915672819
BaseRepresentation
bin1010000000010…
…10101111100111
312211221002102202
411000022233213
5132441230322
612154525115
72036252063
oct500125747
9184832382
1083930087
1143415a0a
122413679b
1314508197
14b20aaa3
15757d292
hex500abe7

83930087 has 8 divisors (see below), whose sum is σ = 88435200. Its totient is φ = 79433784.

The previous prime is 83930081. The next prime is 83930101. The reversal of 83930087 is 78003938.

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 83930087 - 210 = 83929063 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83930087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83930081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28364 + ... + 31182.

It is an arithmetic number, because the mean of its divisors is an integer number (11054400).

Almost surely, 283930087 is an apocalyptic number.

83930087 is a deficient number, since it is larger than the sum of its proper divisors (4505113).

83930087 is a wasteful number, since it uses less digits than its factorization.

83930087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4405.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 83930087 is about 9161.3365291315. The cubic root of 83930087 is about 437.8303781528.

The spelling of 83930087 in words is "eighty-three million, nine hundred thirty thousand, eighty-seven".

Divisors: 1 19 1567 2819 29773 53561 4417373 83930087