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28672092 = 2232796447
BaseRepresentation
bin110110101100…
…0000001011100
31222221200201100
41231120001130
524320001332
62502313100
7465465051
oct155300134
958850640
1028672092
1115203849
129728790
135c2b747
143b45028
1527b567c
hex1b5805c

28672092 has 18 divisors (see below), whose sum is σ = 72476768. Its totient is φ = 9557352.

The previous prime is 28672073. The next prime is 28672093. The reversal of 28672092 is 29027682.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 796447 = 28672092 / (2 + 8 + 6 + 7 + 2 + 0 + 9 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28672093) 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 5 ways as a sum of consecutive naturals, for example, 398188 + ... + 398259.

Almost surely, 228672092 is an apocalyptic number.

It is an amenable number.

28672092 is an abundant number, since it is smaller than the sum of its proper divisors (43804676).

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

28672092 is a wasteful number, since it uses less digits than its factorization.

28672092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796457 (or 796452 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 28672092 is about 5354.6327605168. The cubic root of 28672092 is about 306.0693166050.

The spelling of 28672092 in words is "twenty-eight million, six hundred seventy-two thousand, ninety-two".

Divisors: 1 2 3 4 6 9 12 18 36 796447 1592894 2389341 3185788 4778682 7168023 9557364 14336046 28672092