Search a number
-
+
30479828190 = 23572177915439
BaseRepresentation
bin11100011000101111…
…010100010011011110
32220200012011200220120
4130120233110103132
5444410314000230
622000252255410
72126214156600
oct343057242336
986605150816
1030479828190
1111a21083059
125aa7771566
132b499067c6
14169206d170
15bd5d0a310
hex718bd44de

30479828190 has 192 divisors, whose sum is σ = 91246694400. Its totient is φ = 6473585664.

The previous prime is 30479828167. The next prime is 30479828219. The reversal of 30479828190 is 9182897403.

It is a super-2 number, since 2×304798281902 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1966491 + ... + 1981929.

It is an arithmetic number, because the mean of its divisors is an integer number (475243200).

Almost surely, 230479828190 is an apocalyptic number.

30479828190 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 30479828190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45623347200).

30479828190 is an abundant number, since it is smaller than the sum of its proper divisors (60766866210).

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

30479828190 is a wasteful number, since it uses less digits than its factorization.

30479828190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15559 (or 15552 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 30479828190 in words is "thirty billion, four hundred seventy-nine million, eight hundred twenty-eight thousand, one hundred ninety".