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7906068 = 2232219613
BaseRepresentation
bin11110001010001100010100
3112212200002100
4132022030110
54010443233
6441242100
7124125522
oct36121424
915780070
107906068
11450aa45
122793330
13183a761
14109b312
15a62813
hex78a314

7906068 has 18 divisors (see below), whose sum is σ = 19984874. Its totient is φ = 2635344.

The previous prime is 7906051. The next prime is 7906069. The reversal of 7906068 is 8606097.

It can be written as a sum of positive squares in only one way, i.e., 5143824 + 2762244 = 2268^2 + 1662^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×79060682 = 125011822441248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 219613 = 7906068 / (7 + 9 + 0 + 6 + 0 + 6 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7906069) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109771 + ... + 109842.

Almost surely, 27906068 is an apocalyptic number.

It is an amenable number.

7906068 is an abundant number, since it is smaller than the sum of its proper divisors (12078806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7906068 is a wasteful number, since it uses less digits than its factorization.

7906068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219623 (or 219618 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 7906068 is about 2811.7731060667. The cubic root of 7906068 is about 199.2141495731.

The spelling of 7906068 in words is "seven million, nine hundred six thousand, sixty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 219613 439226 658839 878452 1317678 1976517 2635356 3953034 7906068