Search a number
-
+
30381499170 = 2335113174973
BaseRepresentation
bin11100010010111000…
…001110001100100010
32220102100011001212000
4130102320032030202
5444210130433140
621542420544430
72123611324221
oct342270161442
986370131760
1030381499170
1111980623000
125a7a852116
132b32429759
141682d94cb8
15bcc385a30
hex712e0e322

30381499170 has 256 divisors, whose sum is σ = 94373890560. Its totient is φ = 6930570240.

The previous prime is 30381499147. The next prime is 30381499201. The reversal of 30381499170 is 7199418303.

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

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6106804 + ... + 6111776.

It is an arithmetic number, because the mean of its divisors is an integer number (368648010).

Almost surely, 230381499170 is an apocalyptic number.

30381499170 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30381499170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47186945280).

30381499170 is an abundant number, since it is smaller than the sum of its proper divisors (63992391390).

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

30381499170 is a wasteful number, since it uses less digits than its factorization.

30381499170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5039 (or 5011 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 30381499170 in words is "thirty billion, three hundred eighty-one million, four hundred ninety-nine thousand, one hundred seventy".