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1028442 = 23181947
BaseRepresentation
bin11111011000101011010
31221020202110
43323011122
5230402232
634013150
711512242
oct3730532
91836673
101028442
11642758
124171b6
132a015c
141cab22
15154acc
hexfb15a

1028442 has 16 divisors (see below), whose sum is σ = 2070432. Its totient is φ = 340560.

The previous prime is 1028437. The next prime is 1028471. The reversal of 1028442 is 2448201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 613 + ... + 1559.

It is an arithmetic number, because the mean of its divisors is an integer number (129402).

21028442 is an apocalyptic number.

1028442 is an abundant number, since it is smaller than the sum of its proper divisors (1041990).

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

1028442 is a wasteful number, since it uses less digits than its factorization.

1028442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1028442 is about 1014.1212945205. The cubic root of 1028442 is about 100.9392177498.

The spelling of 1028442 in words is "one million, twenty-eight thousand, four hundred forty-two".

Divisors: 1 2 3 6 181 362 543 947 1086 1894 2841 5682 171407 342814 514221 1028442