Search a number
-
+
30793030980 = 22353116555393
BaseRepresentation
bin11100101011011010…
…000101110101000100
32221111000112001100220
4130223122011311010
51001031003442410
622051321304340
72140036305345
oct345332056504
987430461326
1030793030980
1112071954a38
125b746350b0
132b99777bba
1416c18bc0cc
15c03576070
hex72b685d44

30793030980 has 48 divisors (see below), whose sum is σ = 89001798144. Its totient is φ = 7946588160.

The previous prime is 30793030967. The next prime is 30793031023. The reversal of 30793030980 is 8903039703.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8275837 + ... + 8279556.

It is an arithmetic number, because the mean of its divisors is an integer number (1854204128).

Almost surely, 230793030980 is an apocalyptic number.

30793030980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30793030980 is an abundant number, since it is smaller than the sum of its proper divisors (58208767164).

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

30793030980 is a wasteful number, since it uses less digits than its factorization.

30793030980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16555436 (or 16555434 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 42.

The spelling of 30793030980 in words is "thirty billion, seven hundred ninety-three million, thirty thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 31 60 62 93 124 155 186 310 372 465 620 930 1860 16555393 33110786 49666179 66221572 82776965 99332358 165553930 198664716 248330895 331107860 496661790 513217183 993323580 1026434366 1539651549 2052868732 2566085915 3079303098 5132171830 6158606196 7698257745 10264343660 15396515490 30793030980