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83108390 = 2519742187
BaseRepresentation
bin1001111010000…
…10001000100110
312210101100021112
410331002020212
5132233432030
612125145022
72026260341
oct475021046
9183340245
1083108390
1142a04622
12239bb172
13142ab181
14b075458
157469a95
hex4f42226

83108390 has 16 divisors (see below), whose sum is σ = 150358032. Its totient is φ = 33073824.

The previous prime is 83108387. The next prime is 83108429. The reversal of 83108390 is 9380138.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19124 + ... + 23063.

It is an arithmetic number, because the mean of its divisors is an integer number (9397377).

Almost surely, 283108390 is an apocalyptic number.

83108390 is a deficient number, since it is larger than the sum of its proper divisors (67249642).

83108390 is a wasteful number, since it uses less digits than its factorization.

83108390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42391.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 83108390 is about 9116.3803123828. The cubic root of 83108390 is about 436.3968660116.

The spelling of 83108390 in words is "eighty-three million, one hundred eight thousand, three hundred ninety".

Divisors: 1 2 5 10 197 394 985 1970 42187 84374 210935 421870 8310839 16621678 41554195 83108390