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28749038029 = 591792722189
BaseRepresentation
bin11010110001100100…
…111000000111001101
32202012120101110011021
4122301210320013031
5432334223204104
621112423354141
72035266535255
oct326144700715
982176343137
1028749038029
111121309a868
1256a3bb2951
13293216970a
14156a250965
15b33dc3754
hex6b19381cd

28749038029 has 8 divisors (see below), whose sum is σ = 29399652000. Its totient is φ = 28103868912.

The previous prime is 28749038027. The next prime is 28749038039. The reversal of 28749038029 is 92083094782.

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

It is a cyclic number.

It is not a de Polignac number, because 28749038029 - 21 = 28749038027 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28749038023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1350534 + ... + 1371655.

It is an arithmetic number, because the mean of its divisors is an integer number (3674956500).

Almost surely, 228749038029 is an apocalyptic number.

It is an amenable number.

28749038029 is a deficient number, since it is larger than the sum of its proper divisors (650613971).

28749038029 is a wasteful number, since it uses less digits than its factorization.

28749038029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2722427.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 28749038029 in words is "twenty-eight billion, seven hundred forty-nine million, thirty-eight thousand, twenty-nine".

Divisors: 1 59 179 10561 2722189 160609151 487271831 28749038029