Search a number
7078 = 23539
BaseRepresentation
bin1101110100110
3100201011
41232212
5211303
652434
726431
oct15646
910634
107078
115355
12411a
1332b6
142818
15216d
hex1ba6

7078 has 4 divisors (see below), whose sum is σ = 10620. Its totient is φ = 3538.

The previous prime is 7069. The next prime is 7079. The reversal of 7078 is 8707.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1768 + ... + 1771.

It is an arithmetic number, because the mean of its divisors is an integer number (2655).

27078 is an apocalyptic number.

7078 is a deficient number, since it is larger than the sum of its proper divisors (3542).

7078 is a wasteful number, since it uses less digits than its factorization.

7078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3541.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 7078 is about 84.1308504652. The cubic root of 7078 is about 19.2001012726.

Subtracting from 7078 its sum of digits (22), we obtain a square (7056 = 842).

It can be divided in two parts, 70 and 78, that multiplied together give a triangular number (5460 = T104).

The spelling of 7078 in words is "seven thousand, seventy-eight".

Divisors: 1 2 3539 7078