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30799987362 = 23213712489857
BaseRepresentation
bin11100101011110100…
…101000001010100010
32221111111121110201200
4130223310220022202
51001034244043422
622052130342030
72140152400344
oct345364501242
987444543650
1030799987362
1112075876411
125b76a2a916
132b9b0422c1
1416c27ad294
15c03e9c2ac
hex72bd282a2

30799987362 has 24 divisors (see below), whose sum is σ = 67220415756. Its totient is φ = 10191722496.

The previous prime is 30799987333. The next prime is 30799987409. The reversal of 30799987362 is 26378999703.

It can be written as a sum of positive squares in 2 ways, for example, as 27168599241 + 3631388121 = 164829^2 + 60261^2 .

It is a super-3 number, since 3×307999873623 (a number of 32 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 30799987362.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6242463 + ... + 6247394.

Almost surely, 230799987362 is an apocalyptic number.

30799987362 is an abundant number, since it is smaller than the sum of its proper divisors (36420428394).

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

30799987362 is a wasteful number, since it uses less digits than its factorization.

30799987362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12490002 (or 12489999 counting only the distinct ones).

The product of its (nonzero) digits is 30862944, while the sum is 63.

The spelling of 30799987362 in words is "thirty billion, seven hundred ninety-nine million, nine hundred eighty-seven thousand, three hundred sixty-two".

Divisors: 1 2 3 6 9 18 137 274 411 822 1233 2466 12489857 24979714 37469571 74939142 112408713 224817426 1711110409 3422220818 5133331227 10266662454 15399993681 30799987362