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1255293 = 321310729
BaseRepresentation
bin100110010011101111101
32100202221100
410302131331
5310132133
642523313
713445514
oct4623575
92322840
101255293
11788136
12506539
1334c4a0
1424967b
1519be13
hex13277d

1255293 has 12 divisors (see below), whose sum is σ = 1952860. Its totient is φ = 772416.

The previous prime is 1255279. The next prime is 1255301. The reversal of 1255293 is 3925521.

It can be written as a sum of positive squares in 2 ways, for example, as 544644 + 710649 = 738^2 + 843^2 .

It is not a de Polignac number, because 1255293 - 210 = 1254269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5248 + ... + 5481.

21255293 is an apocalyptic number.

1255293 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1255293 is a deficient number, since it is larger than the sum of its proper divisors (697567).

1255293 is a wasteful number, since it uses less digits than its factorization.

1255293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10748 (or 10745 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 1255293 is about 1120.3985897885. The cubic root of 1255293 is about 107.8735660352.

Adding to 1255293 its sum of digits (27), we get a triangular number (1255320 = T1584).

The spelling of 1255293 in words is "one million, two hundred fifty-five thousand, two hundred ninety-three".

Divisors: 1 3 9 13 39 117 10729 32187 96561 139477 418431 1255293