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394664 = 2349333
BaseRepresentation
bin1100000010110101000
3202001101012
41200112220
5100112124
612243052
73232424
oct1402650
9661335
10394664
1124a576
12170488
1310a83a
14a3b84
157be0e
hex605a8

394664 has 8 divisors (see below), whose sum is σ = 740010. Its totient is φ = 197328.

The previous prime is 394643. The next prime is 394673. The reversal of 394664 is 466493.

It can be written as a sum of positive squares in only one way, i.e., 209764 + 184900 = 458^2 + 430^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 394664.

It is an unprimeable number.

394664 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24659 + ... + 24674.

2394664 is an apocalyptic number.

It is an amenable number.

394664 is a deficient number, since it is larger than the sum of its proper divisors (345346).

394664 is a wasteful number, since it uses less digits than its factorization.

394664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49339 (or 49335 counting only the distinct ones).

The product of its digits is 15552, while the sum is 32.

The square root of 394664 is about 628.2228903821. Note that the first 3 decimals coincide. The cubic root of 394664 is about 73.3515290019.

The spelling of 394664 in words is "three hundred ninety-four thousand, six hundred sixty-four".

Divisors: 1 2 4 8 49333 98666 197332 394664