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30379331040 = 25351923144829
BaseRepresentation
bin11100010010101111…
…111100110111100000
32220102012001220201220
4130102233330313200
5444204102043130
621542302255040
72123554024152
oct342257746740
986365056656
1030379331040
111197a382063
125a79b87480
132b31b4a936
14168298cad2
15bcc0a8410
hex712bfcde0

30379331040 has 192 divisors, whose sum is σ = 105111820800. Its totient is φ = 7341041664.

The previous prime is 30379331039. The next prime is 30379331057. The reversal of 30379331040 is 4013397303.

It is a junction number, because it is equal to n+sod(n) for n = 30379330992 and 30379331010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137346 + ... + 282174.

It is an arithmetic number, because the mean of its divisors is an integer number (547457400).

Almost surely, 230379331040 is an apocalyptic number.

30379331040 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 30379331040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52555910400).

30379331040 is an abundant number, since it is smaller than the sum of its proper divisors (74732489760).

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

30379331040 is a wasteful number, since it uses less digits than its factorization.

30379331040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144889 (or 144881 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 33.

The spelling of 30379331040 in words is "thirty billion, three hundred seventy-nine million, three hundred thirty-one thousand, forty".