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28528821341 = 139990720717
BaseRepresentation
bin11010100100011100…
…110100010001011101
32201122020000021122122
4122210130310101131
5431411334240331
621034515352325
72026653660146
oct324434642135
981566007578
1028528821341
111110a8597a9
1256422b26a5
1328c8654497
141548cc8acd
15b1e8c417b
hex6a473445d

28528821341 has 8 divisors (see below), whose sum is σ = 28738352160. Its totient is φ = 28319352048.

The previous prime is 28528821331. The next prime is 28528821379. The reversal of 28528821341 is 14312882582.

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-28528821341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28528821292 and 28528821301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28528821331) 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, 1366715 + ... + 1387431.

It is an arithmetic number, because the mean of its divisors is an integer number (3592294020).

Almost surely, 228528821341 is an apocalyptic number.

It is an amenable number.

28528821341 is a deficient number, since it is larger than the sum of its proper divisors (209530819).

28528821341 is a wasteful number, since it uses less digits than its factorization.

28528821341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30763.

The product of its digits is 245760, while the sum is 44.

The spelling of 28528821341 in words is "twenty-eight billion, five hundred twenty-eight million, eight hundred twenty-one thousand, three hundred forty-one".

Divisors: 1 139 9907 20717 1377073 2879663 205243319 28528821341