Search a number
-
+
30381886080 = 273357131392
BaseRepresentation
bin11100010010111001…
…101100101010000000
32220102100212201121000
4130102321230222000
5444210230323310
621542433132000
72123614525230
oct342271545200
986370781530
1030381886080
1111980867767
125a7a9ba000
132b325338b0
141683055cc0
15bcc4104c0
hex712e6ca80

30381886080 has 768 divisors, whose sum is σ = 133393478400. Its totient is φ = 6364127232.

The previous prime is 30381886069. The next prime is 30381886091. The reversal of 30381886080 is 8068818303.

30381886080 is a `hidden beast` number, since 3 + 0 + 38 + 1 + 8 + 8 + 608 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (30381886069) and next prime (30381886091).

It is a super-3 number, since 3×303818860803 (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 218574651 + ... + 218574789.

It is an arithmetic number, because the mean of its divisors is an integer number (173689425).

Almost surely, 230381886080 is an apocalyptic number.

30381886080 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 30381886080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66696739200).

30381886080 is an abundant number, since it is smaller than the sum of its proper divisors (103011592320).

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

30381886080 is a wasteful number, since it uses less digits than its factorization.

30381886080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 30381886080 in words is "thirty billion, three hundred eighty-one million, eight hundred eighty-six thousand, eighty".