Search a number
-
+
1028013 = 3748953
BaseRepresentation
bin11111010111110101101
31221020011120
43322332231
5230344023
634011153
711511060
oct3727655
91836146
101028013
116423a8
12416ab9
1329cbbc
141ca8d7
151548e3
hexfafad

1028013 has 8 divisors (see below), whose sum is σ = 1566528. Its totient is φ = 587424.

The previous prime is 1028011. The next prime is 1028017. The reversal of 1028013 is 3108201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1028013 - 21 = 1028011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1027983 and 1028001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028011) 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, 24456 + ... + 24497.

It is an arithmetic number, because the mean of its divisors is an integer number (195816).

21028013 is an apocalyptic number.

It is an amenable number.

1028013 is a deficient number, since it is larger than the sum of its proper divisors (538515).

1028013 is an equidigital number, since it uses as much as digits as its factorization.

1028013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48963.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1028013 is about 1013.9097592981. The cubic root of 1028013 is about 100.9251806766.

The spelling of 1028013 in words is "one million, twenty-eight thousand, thirteen".

Divisors: 1 3 7 21 48953 146859 342671 1028013