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248690 = 25131913
BaseRepresentation
bin111100101101110010
3110122010202
4330231302
530424230
65155202
72054021
oct745562
9418122
10248690
1115a932
12bbb02
1389270
14668b8
154da45
hex3cb72

248690 has 16 divisors (see below), whose sum is σ = 482328. Its totient is φ = 91776.

The previous prime is 248683. The next prime is 248701. The reversal of 248690 is 96842.

248690 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 201601 + 47089 = 449^2 + 217^2 .

It is a super-2 number, since 2×2486902 = 123693432200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 827 + ... + 1086.

2248690 is an apocalyptic number.

248690 is a deficient number, since it is larger than the sum of its proper divisors (233638).

248690 is a wasteful number, since it uses less digits than its factorization.

248690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 248690 is about 498.6882793890. The cubic root of 248690 is about 62.8858266371.

The spelling of 248690 in words is "two hundred forty-eight thousand, six hundred ninety".

Divisors: 1 2 5 10 13 26 65 130 1913 3826 9565 19130 24869 49738 124345 248690