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1800068 = 223111447
BaseRepresentation
bin110110111011110000100
310101110020012
412313132010
5430100233
6102325352
721205004
oct6673604
93343205
101800068
11101a466
12729858
134b043a
1434c004
15258548
hex1b7784

1800068 has 12 divisors (see below), whose sum is σ = 3162432. Its totient is φ = 896520.

The previous prime is 1800067. The next prime is 1800083. The reversal of 1800068 is 8600081.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1800067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521 + ... + 1967.

It is an arithmetic number, because the mean of its divisors is an integer number (263536).

21800068 is an apocalyptic number.

It is an amenable number.

1800068 is a deficient number, since it is larger than the sum of its proper divisors (1362364).

1800068 is a wasteful number, since it uses less digits than its factorization.

1800068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762 (or 1760 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 1800068 is about 1341.6661283643. Note that the first 3 decimals coincide. The cubic root of 1800068 is about 121.6455717060.

The spelling of 1800068 in words is "one million, eight hundred thousand, sixty-eight".

Divisors: 1 2 4 311 622 1244 1447 2894 5788 450017 900034 1800068