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30877357368 = 2331113193591319
BaseRepresentation
bin11100110000011011…
…110001010100111000
32221200220012021102110
4130300123301110320
51001214100413433
622103532532320
72142112131024
oct346033612470
987626167373
1030877357368
1112105510670
125b989210a0
132bb1091580
1416ccb8d384
15c0ab81963
hex7306f1538

30877357368 has 256 divisors, whose sum is σ = 95800320000. Its totient is φ = 8153464320.

The previous prime is 30877357319. The next prime is 30877357373. The reversal of 30877357368 is 86375377803.

It is a super-2 number, since 2×308773573682 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 23409013 + ... + 23410331.

It is an arithmetic number, because the mean of its divisors is an integer number (374220000).

Almost surely, 230877357368 is an apocalyptic number.

30877357368 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30877357368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47900160000).

30877357368 is an abundant number, since it is smaller than the sum of its proper divisors (64922962632).

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

30877357368 is a wasteful number, since it uses less digits than its factorization.

30877357368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730 (or 1726 counting only the distinct ones).

The product of its (nonzero) digits is 17781120, while the sum is 57.

The spelling of 30877357368 in words is "thirty billion, eight hundred seventy-seven million, three hundred fifty-seven thousand, three hundred sixty-eight".