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28679392 = 257128033
BaseRepresentation
bin110110101100…
…1110011100000
31222222001201201
41231121303200
524320220032
62502410544
7465525250
oct155316340
958861651
1028679392
1115209285
129730a54
135c31b71
143b47960
1527b78e7
hex1b59ce0

28679392 has 24 divisors (see below), whose sum is σ = 64529136. Its totient is φ = 12291072.

The previous prime is 28679389. The next prime is 28679419. The reversal of 28679392 is 29397682.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63793 + ... + 64240.

It is an arithmetic number, because the mean of its divisors is an integer number (2688714).

Almost surely, 228679392 is an apocalyptic number.

It is an amenable number.

28679392 is an abundant number, since it is smaller than the sum of its proper divisors (35849744).

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

28679392 is a wasteful number, since it uses less digits than its factorization.

28679392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128050 (or 128042 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The square root of 28679392 is about 5355.3143698573. The cubic root of 28679392 is about 306.0952897873.

The spelling of 28679392 in words is "twenty-eight million, six hundred seventy-nine thousand, three hundred ninety-two".

Divisors: 1 2 4 7 8 14 16 28 32 56 112 224 128033 256066 512132 896231 1024264 1792462 2048528 3584924 4097056 7169848 14339696 28679392