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68384670 = 2352279489
BaseRepresentation
bin1000001001101…
…11011110011110
311202200022010120
410010313132132
5120001302140
610441415410
71460155134
oct404673636
9152608116
1068384670
1135668462
121aa9a566
1311224503
149121754
15600c1d0
hex413779e

68384670 has 16 divisors (see below), whose sum is σ = 164123280. Its totient is φ = 18235904.

The previous prime is 68384669. The next prime is 68384677. The reversal of 68384670 is 7648386.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68384677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1139715 + ... + 1139774.

It is an arithmetic number, because the mean of its divisors is an integer number (10257705).

Almost surely, 268384670 is an apocalyptic number.

68384670 is an abundant number, since it is smaller than the sum of its proper divisors (95738610).

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

68384670 is a wasteful number, since it uses less digits than its factorization.

68384670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279499.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 68384670 is about 8269.5024034098. The cubic root of 68384670 is about 408.9337155431.

The spelling of 68384670 in words is "sixty-eight million, three hundred eighty-four thousand, six hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 2279489 4558978 6838467 11397445 13676934 22794890 34192335 68384670