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1428076 = 221329947
BaseRepresentation
bin101011100101001101100
32200112221201
411130221230
5331144301
650335244
715065326
oct5345154
92615851
101428076
11895a31
1258a524
133b0020
14292616
151d3201
hex15ca6c

1428076 has 24 divisors (see below), whose sum is σ = 2787120. Its totient is φ = 635712.

The previous prime is 1428041. The next prime is 1428079. The reversal of 1428076 is 6708241.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1428079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1035 + ... + 1981.

It is an arithmetic number, because the mean of its divisors is an integer number (116130).

21428076 is an apocalyptic number.

It is an amenable number.

1428076 is a deficient number, since it is larger than the sum of its proper divisors (1359044).

1428076 is a wasteful number, since it uses less digits than its factorization.

1428076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993 (or 991 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 1428076 is about 1195.0213387216. The cubic root of 1428076 is about 112.6117671135.

The spelling of 1428076 in words is "one million, four hundred twenty-eight thousand, seventy-six".

Divisors: 1 2 4 13 26 29 52 58 116 377 754 947 1508 1894 3788 12311 24622 27463 49244 54926 109852 357019 714038 1428076