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1028260 = 22551413
BaseRepresentation
bin11111011000010100100
31221020111201
43323002210
5230401020
634012244
711511562
oct3730244
91836451
101028260
11642602
12417084
132a004c
141caa32
15154a0a
hexfb0a4

1028260 has 12 divisors (see below), whose sum is σ = 2159388. Its totient is φ = 411296.

The previous prime is 1028243. The next prime is 1028263. The reversal of 1028260 is 628201.

It is a happy number.

1028260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 362404 + 665856 = 602^2 + 816^2 .

It is not an unprimeable number, because it can be changed into a prime (1028263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25687 + ... + 25726.

It is an arithmetic number, because the mean of its divisors is an integer number (179949).

21028260 is an apocalyptic number.

1028260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1028260 is an abundant number, since it is smaller than the sum of its proper divisors (1131128).

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

1028260 is a wasteful number, since it uses less digits than its factorization.

1028260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51422 (or 51420 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1028260 is about 1014.0315576943. The cubic root of 1028260 is about 100.9332631047.

The spelling of 1028260 in words is "one million, twenty-eight thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 51413 102826 205652 257065 514130 1028260