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28305383351 = 710737790899
BaseRepresentation
bin11010010111001000…
…011101111110110111
32201001122120110100112
4122113020131332313
5430432134231401
621000414333235
72021301534350
oct322710357667
981048513315
1028305383351
1111005718503
12559b4ba21b
132891281c5b
141527364d27
15b09e8a3bb
hex69721dfb7

28305383351 has 8 divisors (see below), whose sum is σ = 32651337600. Its totient is φ = 24035011128.

The previous prime is 28305383303. The next prime is 28305383371. The reversal of 28305383351 is 15338350382.

It is a happy number.

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-28305383351 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28305383299 and 28305383308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28305383371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18894701 + ... + 18896198.

It is an arithmetic number, because the mean of its divisors is an integer number (4081417200).

Almost surely, 228305383351 is an apocalyptic number.

28305383351 is a deficient number, since it is larger than the sum of its proper divisors (4345954249).

28305383351 is a wasteful number, since it uses less digits than its factorization.

28305383351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37791013.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 28305383351 in words is "twenty-eight billion, three hundred five million, three hundred eighty-three thousand, three hundred fifty-one".

Divisors: 1 7 107 749 37790899 264536293 4043626193 28305383351