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1029893 = 432557
BaseRepresentation
bin11111011011100000101
31221022202012
43323130011
5230424033
634024005
711516414
oct3733405
91838665
101029893
11643857
12418005
132a0a07
141cb47b
15155248
hexfb705

1029893 has 6 divisors (see below), whose sum is σ = 1056294. Its totient is φ = 1004136.

The previous prime is 1029883. The next prime is 1029907. The reversal of 1029893 is 3989201.

It can be written as a sum of positive squares in only one way, i.e., 667489 + 362404 = 817^2 + 602^2 .

It is not a de Polignac number, because 1029893 - 216 = 964357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1029803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1571 + ... + 2127.

It is an arithmetic number, because the mean of its divisors is an integer number (176049).

21029893 is an apocalyptic number.

It is an amenable number.

1029893 is a deficient number, since it is larger than the sum of its proper divisors (26401).

1029893 is an frugal number, since it uses more digits than its factorization.

1029893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643 (or 600 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 1029893 is about 1014.8364400237. The cubic root of 1029893 is about 100.9866662135.

The spelling of 1029893 in words is "one million, twenty-nine thousand, eight hundred ninety-three".

Divisors: 1 43 557 1849 23951 1029893