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1428528929 = 4124319763
BaseRepresentation
bin101010100100101…
…1001111100100001
310200120000210021212
41111021121330201
510411200411204
6353430155505
750254203242
oct12511317441
93616023255
101428528929
11673404a23
1233a4b2b95
13199c59cb9
14d7a1acc9
158562cc6e
hex55259f21

1428528929 has 12 divisors (see below), whose sum is σ = 1498348368. Its totient is φ = 1361206560.

The previous prime is 1428528923. The next prime is 1428528953. The reversal of 1428528929 is 9298258241.

It is not a de Polignac number, because 1428528929 - 224 = 1411751713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428528923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62402 + ... + 82164.

It is an arithmetic number, because the mean of its divisors is an integer number (124862364).

Almost surely, 21428528929 is an apocalyptic number.

It is an amenable number.

1428528929 is a deficient number, since it is larger than the sum of its proper divisors (69819439).

1428528929 is an equidigital number, since it uses as much as digits as its factorization.

1428528929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19888 (or 19847 counting only the distinct ones).

The product of its digits is 829440, while the sum is 50.

The square root of 1428528929 is about 37795.8850802571. The cubic root of 1428528929 is about 1126.2367118207.

The spelling of 1428528929 in words is "one billion, four hundred twenty-eight million, five hundred twenty-eight thousand, nine hundred twenty-nine".

Divisors: 1 41 43 1681 1763 19763 72283 810283 849809 33221603 34842169 1428528929