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390248 = 2348781
BaseRepresentation
bin1011111010001101000
3201211022122
41133101220
544441443
612210412
73213515
oct1372150
9654278
10390248
11247221
12169a08
13108821
14a230c
157a968
hex5f468

390248 has 8 divisors (see below), whose sum is σ = 731730. Its totient is φ = 195120.

The previous prime is 390223. The next prime is 390263. The reversal of 390248 is 842093.

It can be written as a sum of positive squares in only one way, i.e., 386884 + 3364 = 622^2 + 58^2 .

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

It is an unprimeable number.

390248 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 as a sum of consecutive naturals, namely, 24383 + ... + 24398.

2390248 is an apocalyptic number.

It is an amenable number.

390248 is a deficient number, since it is larger than the sum of its proper divisors (341482).

390248 is a wasteful number, since it uses less digits than its factorization.

390248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48787 (or 48783 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 390248 is about 624.6983271948. The cubic root of 390248 is about 73.0769189857.

The spelling of 390248 in words is "three hundred ninety thousand, two hundred forty-eight".

Divisors: 1 2 4 8 48781 97562 195124 390248