Search a number
-
+
79431472148 = 2273283720407
BaseRepresentation
bin100100111111001111…
…1000001010000010100
321121000201022212101212
41021332133001100110
52300133424102043
6100253524040552
75511246242000
oct1117637012024
9247021285355
1079431472148
1130760aa4756
1213489533158
13764b4082c2
143bb7465700
1520ed61b018
hex127e7c1414

79431472148 has 48 divisors (see below), whose sum is σ = 162170131200. Its totient is φ = 34028392608.

The previous prime is 79431472147. The next prime is 79431472151. The reversal of 79431472148 is 84127413497.

It is a junction number, because it is equal to n+sod(n) for n = 79431472096 and 79431472105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79431472147) by changing a digit.

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, 3882161 + ... + 3902567.

It is an arithmetic number, because the mean of its divisors is an integer number (3378544400).

Almost surely, 279431472148 is an apocalyptic number.

It is an amenable number.

79431472148 is an abundant number, since it is smaller than the sum of its proper divisors (82738659052).

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

79431472148 is a wasteful number, since it uses less digits than its factorization.

79431472148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23269 (or 23253 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 50.

The spelling of 79431472148 in words is "seventy-nine billion, four hundred thirty-one million, four hundred seventy-two thousand, one hundred forty-eight".

Divisors: 1 2 4 7 14 28 49 98 196 343 686 1372 2837 5674 11348 19859 20407 39718 40814 79436 81628 139013 142849 278026 285698 556052 571396 973091 999943 1946182 1999886 3892364 3999772 6999601 13999202 27998404 57894659 115789318 231578636 405262613 810525226 1621050452 2836838291 5673676582 11347353164 19857868037 39715736074 79431472148