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7256985 = 351672897
BaseRepresentation
bin11011101011101110011001
3111122200201020
4123223232121
53324210420
6415313053
7115453251
oct33535631
914580636
107256985
11410730a
12251b789
131671198
14d6c961
15985340
hex6ebb99

7256985 has 16 divisors (see below), whose sum is σ = 11684736. Its totient is φ = 3845888.

The previous prime is 7256947. The next prime is 7256999. The reversal of 7256985 is 5896527.

7256985 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 7256985 - 210 = 7255961 is a prime.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1057 + ... + 3953.

It is an arithmetic number, because the mean of its divisors is an integer number (730296).

Almost surely, 27256985 is an apocalyptic number.

It is an amenable number.

7256985 is a deficient number, since it is larger than the sum of its proper divisors (4427751).

7256985 is a wasteful number, since it uses less digits than its factorization.

7256985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3072.

The product of its digits is 151200, while the sum is 42.

The square root of 7256985 is about 2693.8791732370. The cubic root of 7256985 is about 193.6059685710.

The spelling of 7256985 in words is "seven million, two hundred fifty-six thousand, nine hundred eighty-five".

Divisors: 1 3 5 15 167 501 835 2505 2897 8691 14485 43455 483799 1451397 2418995 7256985