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1028386 = 21673079
BaseRepresentation
bin11111011000100100010
31221020200101
43323010202
5230402021
634013014
711512132
oct3730442
91836611
101028386
11642707
1241716a
132a0118
141caac2
15154a91
hexfb122

1028386 has 8 divisors (see below), whose sum is σ = 1552320. Its totient is φ = 510948.

The previous prime is 1028333. The next prime is 1028389. The reversal of 1028386 is 6838201.

1028386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1028389) 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, 1206 + ... + 1873.

It is an arithmetic number, because the mean of its divisors is an integer number (194040).

21028386 is an apocalyptic number.

1028386 is a deficient number, since it is larger than the sum of its proper divisors (523934).

1028386 is a wasteful number, since it uses less digits than its factorization.

1028386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1028386 is about 1014.0936840352. The cubic root of 1028386 is about 100.9373856261.

The spelling of 1028386 in words is "one million, twenty-eight thousand, three hundred eighty-six".

Divisors: 1 2 167 334 3079 6158 514193 1028386