Search a number
-
+
30387191219616 = 253721117193749139
BaseRepresentation
bin1101110100011000100011…
…01111010000010110100000
310222120222122121021200000110
412322030101233100112200
512440330431423011431
6144343403302451320
76254254632430200
oct672142157202640
9128528577250013
1030387191219616
119756154284140
1234a92a8a33b40
1313c56661aa4aa
14770a6835c400
1537a691e43346
hex1ba311bd05a0

30387191219616 has 1152 divisors, whose sum is σ = 115871836953600. Its totient is φ = 6847179816960.

The previous prime is 30387191219573. The next prime is 30387191219663. The reversal of 30387191219616 is 61691219178303.

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

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 618367975 + ... + 618417113.

It is an arithmetic number, because the mean of its divisors is an integer number (100583191800).

Almost surely, 230387191219616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30387191219616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57935918476800).

30387191219616 is an abundant number, since it is smaller than the sum of its proper divisors (85484645733984).

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

30387191219616 is a wasteful number, since it uses less digits than its factorization.

30387191219616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49250 (or 49235 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 57.

The spelling of 30387191219616 in words is "thirty trillion, three hundred eighty-seven billion, one hundred ninety-one million, two hundred nineteen thousand, six hundred sixteen".