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1028253 = 32953223
BaseRepresentation
bin11111011000010011101
31221020111110
43323002131
5230401003
634012233
711511552
oct3730235
91836443
101028253
116425a6
12417079
132a0045
141caa29
15154a03
hexfb09d

1028253 has 16 divisors (see below), whose sum is σ = 1451520. Its totient is φ = 646464.

The previous prime is 1028243. The next prime is 1028263. The reversal of 1028253 is 3528201.

It is an interprime number because it is at equal distance from previous prime (1028243) and next prime (1028263).

It is not a de Polignac number, because 1028253 - 25 = 1028221 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4500 + ... + 4722.

It is an arithmetic number, because the mean of its divisors is an integer number (90720).

21028253 is an apocalyptic number.

It is an amenable number.

1028253 is a deficient number, since it is larger than the sum of its proper divisors (423267).

1028253 is a wasteful number, since it uses less digits than its factorization.

1028253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1028253 is about 1014.0281061194. The cubic root of 1028253 is about 100.9330340658.

The spelling of 1028253 in words is "one million, twenty-eight thousand, two hundred fifty-three".

Divisors: 1 3 29 53 87 159 223 669 1537 4611 6467 11819 19401 35457 342751 1028253