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7906131 = 321276917
BaseRepresentation
bin11110001010001101010011
3112212200011200
4132022031103
54010444011
6441242243
7124125642
oct36121523
915780150
107906131
11450aaa2
122793383
13183a7ac
14109b359
15a62856
hex78a353

7906131 has 12 divisors (see below), whose sum is σ = 11511552. Its totient is φ = 5228496.

The previous prime is 7906127. The next prime is 7906163. The reversal of 7906131 is 1316097.

7906131 is digitally balanced in base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7906131 - 22 = 7906127 is a prime.

It is a super-2 number, since 2×79061312 = 125013814778322, which contains 22 as substring.

7906131 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7906095 and 7906104.

It is not an unprimeable number, because it can be changed into a prime (7902131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2316 + ... + 4601.

It is an arithmetic number, because the mean of its divisors is an integer number (959296).

Almost surely, 27906131 is an apocalyptic number.

7906131 is a deficient number, since it is larger than the sum of its proper divisors (3605421).

7906131 is a wasteful number, since it uses less digits than its factorization.

7906131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7050 (or 7047 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 7906131 is about 2811.7843089398. The cubic root of 7906131 is about 199.2146787219.

The spelling of 7906131 in words is "seven million, nine hundred six thousand, one hundred thirty-one".

Divisors: 1 3 9 127 381 1143 6917 20751 62253 878459 2635377 7906131