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145180806 = 23109221989
BaseRepresentation
bin10001010011101…
…00100010000110
3101010011221121220
420221310202012
5244131241211
622223421210
73412005441
oct1051644206
9333157556
10145180806
1174a50541
1240754806
1324102504
14153d2658
15cb2b806
hex8a74886

145180806 has 16 divisors (see below), whose sum is σ = 293026800. Its totient is φ = 47949408.

The previous prime is 145180787. The next prime is 145180811. The reversal of 145180806 is 608081541.

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, 110341 + ... + 111648.

It is an arithmetic number, because the mean of its divisors is an integer number (18314175).

Almost surely, 2145180806 is an apocalyptic number.

145180806 is an abundant number, since it is smaller than the sum of its proper divisors (147845994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145180806 is a wasteful number, since it uses less digits than its factorization.

145180806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222103.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 145180806 is about 12049.0998004000. The cubic root of 145180806 is about 525.5770598167.

The spelling of 145180806 in words is "one hundred forty-five million, one hundred eighty thousand, eight hundred six".

Divisors: 1 2 3 6 109 218 327 654 221989 443978 665967 1331934 24196801 48393602 72590403 145180806