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256826948 = 2279172391
BaseRepresentation
bin11110100111011…
…01111001000100
3122220021011100012
433103231321010
51011221430243
641252405352
76235664420
oct1723557104
9586234305
10256826948
11121a76984
1272016858
1341292c11
1426175b80
1517831d18
hexf4ede44

256826948 has 12 divisors (see below), whose sum is σ = 513653952. Its totient is φ = 110068680.

The previous prime is 256826891. The next prime is 256826957. The reversal of 256826948 is 849628652.

256826948 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

256826948 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 256826896 and 256826905.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4586168 + ... + 4586223.

It is an arithmetic number, because the mean of its divisors is an integer number (42804496).

Almost surely, 2256826948 is an apocalyptic number.

256826948 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

256826948 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

256826948 is a wasteful number, since it uses less digits than its factorization.

256826948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9172402 (or 9172400 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 50.

The square root of 256826948 is about 16025.8212894067. The cubic root of 256826948 is about 635.6433828715.

The spelling of 256826948 in words is "two hundred fifty-six million, eight hundred twenty-six thousand, nine hundred forty-eight".

Divisors: 1 2 4 7 14 28 9172391 18344782 36689564 64206737 128413474 256826948