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30979094760 = 2334579127953
BaseRepresentation
bin11100110110011111…
…110111100011101000
32221221222122001220000
4130312133313203220
51001421122013020
622122005303000
72144455650345
oct346637674350
987858561800
1030979094760
1112157989459
126006a04a60
132bc9192b03
1416dc4b37cc
15c14a7b090
hex7367f78e8

30979094760 has 320 divisors, whose sum is σ = 106383974400. Its totient is φ = 8083805184.

The previous prime is 30979094759. The next prime is 30979094771. The reversal of 30979094760 is 6749097903.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 30979094697 and 30979094706.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 32506444 + ... + 32507396.

It is an arithmetic number, because the mean of its divisors is an integer number (332449920).

Almost surely, 230979094760 is an apocalyptic number.

30979094760 is a gapful number since it is divisible by the number (30) 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 30979094760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53191987200).

30979094760 is an abundant number, since it is smaller than the sum of its proper divisors (75404879640).

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

30979094760 is a wasteful number, since it uses less digits than its factorization.

30979094760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182 (or 1169 counting only the distinct ones).

The product of its (nonzero) digits is 2571912, while the sum is 54.

It can be divided in two parts, 309790 and 94760, that added together give a triangular number (404550 = T899).

The spelling of 30979094760 in words is "thirty billion, nine hundred seventy-nine million, ninety-four thousand, seven hundred sixty".