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28387036206 = 2321577057567
BaseRepresentation
bin11010011011111111…
…111100110000101110
32201021100012212000100
4122123333330300232
5431114040124311
621012452411530
72023312553334
oct323377746056
981240185010
1028387036206
1111047818501
125602916ba6
1328a5170759
14153413bb54
15b12218a56
hex69bffcc2e

28387036206 has 12 divisors (see below), whose sum is σ = 61505245152. Its totient is φ = 9462345396.

The previous prime is 28387036199. The next prime is 28387036211. The reversal of 28387036206 is 60263078382.

28387036206 is a `hidden beast` number, since 283 + 8 + 7 + 0 + 362 + 0 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 788528766 + ... + 788528801.

It is an arithmetic number, because the mean of its divisors is an integer number (5125437096).

Almost surely, 228387036206 is an apocalyptic number.

28387036206 is an abundant number, since it is smaller than the sum of its proper divisors (33118208946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28387036206 is a wasteful number, since it uses less digits than its factorization.

28387036206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577057575 (or 1577057572 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 28387036206 in words is "twenty-eight billion, three hundred eighty-seven million, thirty-six thousand, two hundred six".

Divisors: 1 2 3 6 9 18 1577057567 3154115134 4731172701 9462345402 14193518103 28387036206