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28834971 = 311873787
BaseRepresentation
bin110110111111…
…1110010011011
32000020222010220
41231333302123
524340204341
62510011123
7500043654
oct155776233
960228126
1028834971
1115305160
1297a6aa3
135c87919
143b8852b
1527e8a66
hex1b7fc9b

28834971 has 8 divisors (see below), whose sum is σ = 41941824. Its totient is φ = 17475720.

The previous prime is 28834963. The next prime is 28834979. The reversal of 28834971 is 17943882.

It is an interprime number because it is at equal distance from previous prime (28834963) and next prime (28834979).

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

It is not a de Polignac number, because 28834971 - 23 = 28834963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28834979) 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, 436861 + ... + 436926.

It is an arithmetic number, because the mean of its divisors is an integer number (5242728).

Almost surely, 228834971 is an apocalyptic number.

28834971 is a deficient number, since it is larger than the sum of its proper divisors (13106853).

28834971 is a wasteful number, since it uses less digits than its factorization.

28834971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873801.

The product of its digits is 96768, while the sum is 42.

The square root of 28834971 is about 5369.8203880577. The cubic root of 28834971 is about 306.6477903998.

It can be divided in two parts, 288349 and 71, that added together give a triangular number (288420 = T759).

The spelling of 28834971 in words is "twenty-eight million, eight hundred thirty-four thousand, nine hundred seventy-one".

Divisors: 1 3 11 33 873787 2621361 9611657 28834971