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145866 = 23723151
BaseRepresentation
bin100011100111001010
321102002110
4203213022
514131431
63043150
71145160
oct434712
9242073
10145866
119a656
12704b6
1351516
143b230
152d346
hex239ca

145866 has 32 divisors (see below), whose sum is σ = 350208. Its totient is φ = 39600.

The previous prime is 145861. The next prime is 145879. The reversal of 145866 is 668541.

145866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 145866.

It is not an unprimeable number, because it can be changed into a prime (145861) by changing a digit.

145866 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 891 + ... + 1041.

It is an arithmetic number, because the mean of its divisors is an integer number (10944).

2145866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175104).

145866 is an abundant number, since it is smaller than the sum of its proper divisors (204342).

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

145866 is a wasteful number, since it uses less digits than its factorization.

145866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186.

The product of its digits is 5760, while the sum is 30.

The square root of 145866 is about 381.9240762246. The cubic root of 145866 is about 52.6402598664.

The spelling of 145866 in words is "one hundred forty-five thousand, eight hundred sixty-six".

Divisors: 1 2 3 6 7 14 21 23 42 46 69 138 151 161 302 322 453 483 906 966 1057 2114 3171 3473 6342 6946 10419 20838 24311 48622 72933 145866