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30778030080 = 21136571931
BaseRepresentation
bin11100101010100000…
…110111100000000000
32221102222021221000000
4130222200313200000
51001013133430310
622050024000000
72136464640060
oct345240674000
987388257000
1030778030080
11120644395a6
125b6b600000
132b96625025
1416bd8d53a0
15c020b14c0
hex72a837800

30778030080 has 1344 divisors, whose sum is σ = 137497651200. Its totient is φ = 6449725440.

The previous prime is 30778030079. The next prime is 30778030109. The reversal of 30778030080 is 8003087703.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 992839665 + ... + 992839695.

It is an arithmetic number, because the mean of its divisors is an integer number (102304800).

Almost surely, 230778030080 is an apocalyptic number.

30778030080 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 30778030080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68748825600).

30778030080 is an abundant number, since it is smaller than the sum of its proper divisors (106719621120).

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

30778030080 is an equidigital number, since it uses as much as digits as its factorization.

30778030080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The spelling of 30778030080 in words is "thirty billion, seven hundred seventy-eight million, thirty thousand, eighty".