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28872883 = 137193089
BaseRepresentation
bin110111000100…
…1000010110011
32000022220011001
41232021002303
524342413013
62510502431
7500262334
oct156110263
960286131
1028872883
1115330696
129804a17
135c9bc60
143b9828b
152804ddd
hex1b890b3

28872883 has 8 divisors (see below), whose sum is σ = 31147200. Its totient is φ = 26606208.

The previous prime is 28872869. The next prime is 28872917. The reversal of 28872883 is 38827882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-28872883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28872083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7803 + ... + 10891.

It is an arithmetic number, because the mean of its divisors is an integer number (3893400).

Almost surely, 228872883 is an apocalyptic number.

28872883 is a deficient number, since it is larger than the sum of its proper divisors (2274317).

28872883 is a wasteful number, since it uses less digits than its factorization.

28872883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3821.

The product of its digits is 344064, while the sum is 46.

The square root of 28872883 is about 5373.3493279332. The cubic root of 28872883 is about 306.7821242688.

The spelling of 28872883 in words is "twenty-eight million, eight hundred seventy-two thousand, eight hundred eighty-three".

Divisors: 1 13 719 3089 9347 40157 2220991 28872883