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28982083 = 132229391
BaseRepresentation
bin110111010001…
…1101101000011
32000112102221111
41232203231003
524404411313
62513104151
7501225604
oct156435503
960472844
1028982083
11153a5739
129858057
136009880
143bc5dab
15282743d
hex1ba3b43

28982083 has 4 divisors (see below), whose sum is σ = 31211488. Its totient is φ = 26752680.

The previous prime is 28982081. The next prime is 28982101. The reversal of 28982083 is 38028982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28982083 - 21 = 28982081 is a prime.

It is a super-2 number, since 2×289820832 = 1679922270037778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28982081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1114683 + ... + 1114708.

It is an arithmetic number, because the mean of its divisors is an integer number (7802872).

Almost surely, 228982083 is an apocalyptic number.

28982083 is a deficient number, since it is larger than the sum of its proper divisors (2229405).

28982083 is a wasteful number, since it uses less digits than its factorization.

28982083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229404.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 28982083 is about 5383.5009984210. The cubic root of 28982083 is about 307.1683974641.

The spelling of 28982083 in words is "twenty-eight million, nine hundred eighty-two thousand, eighty-three".

Divisors: 1 13 2229391 28982083