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83855030 = 2571197929
BaseRepresentation
bin1001111111110…
…00011010110110
312211210021110212
410333320122312
5132431330110
612153145422
72035520210
oct477703266
9184707425
1083855030
1143374586
12240bb272
13144acc7c
14b1cb5b0
157565e05
hex4ff86b6

83855030 has 16 divisors (see below), whose sum is σ = 172501920. Its totient is φ = 28750272.

The previous prime is 83855029. The next prime is 83855041. The reversal of 83855030 is 3055838.

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 7 ways as a sum of consecutive naturals, for example, 598895 + ... + 599034.

It is an arithmetic number, because the mean of its divisors is an integer number (10781370).

Almost surely, 283855030 is an apocalyptic number.

83855030 is an abundant number, since it is smaller than the sum of its proper divisors (88646890).

83855030 is a wasteful number, since it uses less digits than its factorization.

83855030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197943.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 83855030 is about 9157.2392127759. The cubic root of 83855030 is about 437.6998249080.

The spelling of 83855030 in words is "eighty-three million, eight hundred fifty-five thousand, thirty".

Divisors: 1 2 5 7 10 14 35 70 1197929 2395858 5989645 8385503 11979290 16771006 41927515 83855030