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28949683 = 773181313
BaseRepresentation
bin110111001101…
…1110010110011
32000110210111111
41232123302303
524402342213
62512254151
7501032260
oct156336263
960423444
1028949683
1115383364
129841357
135cc7bb9
143bb8267
15281ca3d
hex1b9bcb3

28949683 has 16 divisors (see below), whose sum is σ = 33831616. Its totient is φ = 24261120.

The previous prime is 28949681. The next prime is 28949693. The reversal of 28949683 is 38694982.

It is a cyclic number.

It is not a de Polignac number, because 28949683 - 21 = 28949681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28949681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92335 + ... + 92647.

It is an arithmetic number, because the mean of its divisors is an integer number (2114476).

Almost surely, 228949683 is an apocalyptic number.

28949683 is a deficient number, since it is larger than the sum of its proper divisors (4881933).

28949683 is a wasteful number, since it uses less digits than its factorization.

28949683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574.

The product of its digits is 746496, while the sum is 49.

The square root of 28949683 is about 5380.4909627282. The cubic root of 28949683 is about 307.0538903157.

The spelling of 28949683 in words is "twenty-eight million, nine hundred forty-nine thousand, six hundred eighty-three".

Divisors: 1 7 73 181 313 511 1267 2191 13213 22849 56653 92491 159943 396571 4135669 28949683