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28672083 = 3311195081
BaseRepresentation
bin110110101100…
…0000001010011
31222221200201000
41231120001103
524320001313
62502313043
7465465036
oct155300123
958850630
1028672083
1115203840
129728783
135c2b73b
143b4501d
1527b5673
hex1b58053

28672083 has 32 divisors (see below), whose sum is σ = 48787200. Its totient is φ = 16459200.

The previous prime is 28672073. The next prime is 28672093. The reversal of 28672083 is 38027682.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28672073) and next prime (28672093).

It is not a de Polignac number, because 28672083 - 24 = 28672067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28672073) 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 31 ways as a sum of consecutive naturals, for example, 3103 + ... + 8183.

It is an arithmetic number, because the mean of its divisors is an integer number (1524600).

Almost surely, 228672083 is an apocalyptic number.

28672083 is a deficient number, since it is larger than the sum of its proper divisors (20115117).

28672083 is a wasteful number, since it uses less digits than its factorization.

28672083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5120 (or 5114 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 28672083 is about 5354.6319201230. The cubic root of 28672083 is about 306.0692845805.

It can be divided in two parts, 2867 and 2083, that added together give a triangular number (4950 = T99).

The spelling of 28672083 in words is "twenty-eight million, six hundred seventy-two thousand, eighty-three".

Divisors: 1 3 9 11 19 27 33 57 99 171 209 297 513 627 1881 5081 5643 15243 45729 55891 96539 137187 167673 289617 503019 868851 1061929 1509057 2606553 3185787 9557361 28672083